Preparation for AP Chemistry SUMMER ASSIGNMENT ( 5 P a R T S )
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NACE Bromine Chemistry Review Paper
25 YEARS OF BROMINE CHEMISTRY IN INDUSTRIAL WATER SYSTEMS: A REVIEW Christopher J. Nalepa Albemarle Corporation P.O. Box 14799 Baton Rouge, LA 70898 ABSTRACT Bromine chemistry is used to great advantage in nature for fouling control by a number of sessile marine organisms such as sponges, seaweeds, and bryozoans. Such organisms produce small quantities of brominated organic compounds that effectively help keep their surfaces clean of problem bacteria, fungi, and algae. For over two decades, bromine chemistry has been used to similar advantage in the treatment of industrial water systems. The past several years in particular has seen the development of several diverse bromine product forms – one-drum stabilized bromine liquids, all-bromine hydantoin solids, and pumpable gels. The purpose of this paper is to review the development of bromine chemistry in industrial water treatment, discuss characteristics of the new product forms, and speculate on future developments. Keywords: Oxidizing biocide, bleach, bromine, bromine chemistry, sodium hypobromite, activated sodium bromide, Bromochlorodimethylhydantoin, Bromochloromethyethylhydantoin, Dibromodi- methylhydantoin,, BCDMH, BCMEH, DBDMH, stabilized bromine chloride, stabilized hypobromite INTRODUCTION Sessile marine organisms generate metabolites to ward off predators and deter attachment of potential micro- and macrofoulants. Sponges, algae, and bryozoans for example, produce a rich variety of bromine-containing compounds that exhibit antifoulant properties (Fig. 1).1,2,3 Scientists are actively studying these organisms to understand how they maintain surfaces that are relatively clean and slime- free.4 Brominated furanones isolated from the red algae Delisea pulchra, for example, have been found to interfere with the chemical signals (acylated homoserine lactones) that bacteria use to communicate with one another to produce biofilms.5,6 This work may eventually lead to more effective control of microorganisms in a number of industries such as industrial water treatment, oil and gas production, health care, etc. -
WO 2016/074683 Al 19 May 2016 (19.05.2016) W P O P C T
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2016/074683 Al 19 May 2016 (19.05.2016) W P O P C T (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every C12N 15/10 (2006.01) kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, (21) International Application Number: BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, PCT/DK20 15/050343 DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, (22) International Filing Date: HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, 11 November 2015 ( 11. 1 1.2015) KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, (25) Filing Language: English PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, (26) Publication Language: English SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (30) Priority Data: PA 2014 00655 11 November 2014 ( 11. 1 1.2014) DK (84) Designated States (unless otherwise indicated, for every 62/077,933 11 November 2014 ( 11. 11.2014) US kind of regional protection available): ARIPO (BW, GH, 62/202,3 18 7 August 2015 (07.08.2015) US GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, (71) Applicant: LUNDORF PEDERSEN MATERIALS APS TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, [DK/DK]; Nordvej 16 B, Himmelev, DK-4000 Roskilde DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, (DK). -
WO 2013/089962 Al 20 June 2013 (20.06.2013) W P O P C T
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2013/089962 Al 20 June 2013 (20.06.2013) W P O P C T (51) International Patent Classification: (81) Designated States (unless otherwise indicated, for every B01J 31/04 (2006.01) B01J 31/18 (2006.01) kind of national protection available): AE, AG, AL, AM, B01J 31/14 (2006.01) B01J 31/22 (2006.01) AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, (21) Number: International Application DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, PCT/US20 12/065285 HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, (22) International Filing Date: KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, 15 November 2012 (15.1 1.2012) ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, (25) Filing Language: English RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, (26) Publication Language: English TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (30) Priority Data: 13/323,328 12 December 201 1 (12. 12.201 1) US (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, (71) Applicant (for all designated States except US): CHEV¬ GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, RON PHILLIPS CHEMICAL COMPANY LP UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, [US/US]; 10001 Six Pines Drive, The Woodlands, Texas TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, 77380 (US). -
AP Chemistry Summer Assignment 2021-22 School Year
AP Chemistry AP Chemistry Summer Assignment 2021-22 School Year Chemical Foundations Chapter 1 1. How many significant figures are in the following numbers? a. 0.00150 b. 0.1205 c. 200 d. 2.00 X 10 3 2. Complete the operation and report using the correct number of significant figures a. 26.20 - 0.5= b. 2.5 + 3.25 = c. .040 X 2.0 = d. 3.25 / 4 = e. 3.0 X 10 -3 X 6 = Atomic , Molecules Ions CH 2 and Stoichiometry CH 3 with Periodicity CH 7 3. What is an isotope? Refer to the isotope of Uranium 92U 4. How many protons and neutrons are in the nucleus of this isotope. 5. How many electrons are in a single atom of Uranium 6. What is the mass of this isotope of Uranium. 7. Assume silicon has three major isotopes in nature. The average atomic mass of silicon is 28.09 amu. Fill in the missing information in the table. Isotope Mass (amu) Abundance 28Si 27.89 29Si 4.70% 30Si 29.97 3.09% 8. Which color of light has the highest frequency, red or green ? 9. Which color of light has the longest wavelength, green or violet? 10. Hydrogen emits light with a wavelength of 410 nm, what is the frequency of this light? 11. What is the electron configuration, orbital notation and noble gas notation for phosphorus? For bromine? How many unpaired electrons does phosphorus have? How many unpaired electrons does bromine have? 12. What is the charge for a phosphorus ion? Why does it make this charge? 13. -
Chemical Hygiene Plan Ii Revised 03/2021 Table of Contents
MAR 2021 Office of Environmental Health and Safety Principal Author/Editor: David Webber, PhD/Chemical Hygiene Officer Contributing Authors/Editors: Nikolai Evdokimov, PhD, James Gibson, PhD, Tania Guardado, PhD, Amanda Jevons, Deona Willes, MPH Graphics/Design: Alfred M. Bouziane, MS, Brent Pantell USC Chemical Hygiene Plan ii Revised 03/2021 Table of Contents i.0 2021 Revision Summary Section 3.0 vi Section 4.0 vi Section 5.0 vii Section 7.0 vii Section 8.0 viii Section 10.0 x Appendix D x Appendix G x 1.0 Introduction Purpose and Scope 1.1 Sources of Safety Information 1.2 2.0 Regulatory Requirements 3.0 Roles and Responsibilities Research Safety Oversight Committee (RSOC) 3.1 Campus-Wide Chemical Safety Committee (CCSC) 3.1 Other Safety Committees 3.2 Office of Environmental Health & Safety 3.2 Principal Investigator (PI) 3.3 Training Requirements 3.5 4.0 Basics of Laboratory Safety Hazard, Risk, and Safety Management 4.1 Hierarchy of Safety Controls 4.1 Group Safety Management and Safety Culture 4.4 USC Chemical Hygiene Plan iii Revised 03/2021 Basics of Lab Facilities, Equipment, and Emergency Supplies 4.7 Emergency Equipment and Supplies 4.15 Open Flames 4.20 5.0 Hazard Communication Labeling and Signage Systems 5.2 Labelling and Signage in the Lab: What You Need to Do 5.5 Safety Data Sheets (SDSs): What Are They? 5.7 SDSs in The Lab: What You Need to Do 5.8 6.0 Hazardous Chemicals and Hazard Classification Introduction 6.1 Health-Hazardous Chemicals: Routes of Exposure 6.2 Particularly Hazardous Substances (PHS) 6.16 7.0 Chemical -
THE MONATOMIC IONS! 1. What Is the Formula for Silver? Ag 2. What Is
Name: ______________________________ THE MONATOMIC IONS! 1. What is the formula for silver? Ag+ 22. What is the formula for cobalt (II)? Co2+ 2. What is the formula for cadmium? Cd2+ 23. What is the formula for chromium (II)? Cr2+ 3. What is the formula for manganese (II)? Mn2+ 24. What is the formula for copper (II)? Cu2+ 4. What is the formula for nickel (II)? Ni2+ 25. What is the formula for tin (IV)? Sn4+ 5. What is the formula for chromous? Cr2+ 26. What is the formula for lead (IV)? Pb4+ 6. What is the formula for zinc? Zn2+ 27. What is the formula for iron (III)? Fe3+ 2+ 2+ 7. What is the formula for cobaltous? Co 28. What is the formula for mercury (I)? Hg2 8. What is the formula for cuprous? Cu+ 29. What is the formula for lead (II)? Pb2+ 9. What is the formula for ferrous? Fe2+ 30. What is the formula for mercury (II)? Hg2+ 2+ 2+ 10. What is the formula for mercurous? Hg2 31. What is the formula for iron (II)? Fe 11. What is the formula for stannous? Sn2+ 32. What is the formula for copper (I)? Cu+ 12. What is the formula for plumbous? Pb2+ 33. What is the formula for tin (II)? Sn2+ 13. What is the formula for chromic? Cr3+ 34. What is the formula for fluoride? F- 14. What is the formula for cobaltic? Co3+ 35. What is the formula for chloride? Cl- 15. What is the formula for cupric? Cu2+ 36. What is the formula for hydride? H- 16. -
Compound Name
Indicate Type of Compound: Compound Name Write your answer here I = ionic, A= acid, M = molecular manganese (II) bromite I Mn(BrO2)2 manganese (II) phosphite I Mn3(PO3)2 rubidium sulfite I Rb2SO3 hydroselenic acid A H2Se(aq) sodium perbromate I NaBrO4 cobalt (III) chromate I Co2(CrO4)3 antimony (V) nitrite I Sb(NO2)5 chloric acid A HClO3(aq) pentaselenium decabromide M Se5Br10 disulfur decachloride M S2Cl10 nickel (III) nitrate I Ni(NO3)3 copper (II) bromide I CuBr2 nickel (II) hydrogen phosphate I NiHPO4 iron (II) hydrogen sulfate I Fe(HSO4)2 bismuth (V) acetate I Bi(C2H3O2)5 sulfurous acid A H2SO3(aq) sulfuric acid A H2SO4(aq) nickel (II) chloride I NiCl2 tin (IV) phosphate I Sn3(PO4)4 mercury (I) iodate I Hg2(IO3)2 Compound Indicate Type of Compound: Write your answer here Formula I = ionic, A= acid, M = molecular Co(HCO3)2 I (with VOS metal) cobalt (II) hydrogen carbonate Cs2S I cesium sulfide Ca(IO2)2 I calcium iodite Ba2C I barium carbide Mn(CO3)2 I (with VOS metal) manganese (IV) carbonate CuBrO2 I (with VOS metal) copper (I) bromite AgHS I silver hydrogen sulfide C9N10 M nonacarbon decanitride CrI2 I (with VOS metal) chromium (II) iodide Mg(NO3)2 I magnesium nitrate HC2H3O2 (aq) A acetic acid HClO2 (aq) A chlorous acid Be(IO4)2 I beryllium periodate HIO4(aq) A periodic acid BaO I barium oxide Cd(BrO3)2 I cadmium bromate Bi(CN)5 I (with VOS metal) bismuth (V) cyanide AuHS I (with VOS metal) gold (I) hydrogen sulfide AuClO I (with VOS metal) gold (I) hypochlorite Na2CO3 I sodium carbonate Indicate Type of Compound: Compound Name -
2013-‐08-‐04 1 Oxidation and Reduction
2013-08-04 Rules for Assigning B) Oxidation State Determination Oxidation State (O.S.)* 1. O.S. of an atom in pure element = 0 Oxidation and Reduction For an atom, electrons can be lost or gained during a 2. O.S. of monoatomic ion = charge chemical reaction. 3. O.S. of Oxygen (O) is -2 in most of its covalent and ionic compounds (-1 in peroxides). If electrons are lost: OXIDATION The state becomes more positive 4. O.S. of H is +1 when combined with a non-metal 5. O.S. of H is -1 when combined with a metal If electrons are gained: REDUCTION The state becomes more negative 6. O.S. of Fluorine (F) is -1 in compounds 7. The sum of O.S. is 0 in compounds Oxidation State (O.S.) or Oxidation Number (O.N.) Number of electrons lost or gained during a chemical 8. The sum of O.S. equals charge in ions change * A compilation from different textbooks Elements with Fixed Oxidation States (O.S.)* Instead of memorizing elements that show different O.S., remember those that have a fixed one: Group 1 (IA) elements: Always +1 Group 2 (IIA) elements: Always +2 Aluminum, Al, and Scandium, Sc: Always +3 Zinc, Zn, and Cadmium, Cd: Always +2 Silver, Ag: Always +1 * A compilation from different textbooks 1 2013-08-04 OXIDATION STATE DETERMINATION EXERCISES Assign oxidation state (O.S.) to each element in the following compounds: a) SO3 i) CrCl3 2- 2- b) SO3 j) CrO4 2- c) KMnO4 k) Cr2O7 d) MnO2 l) HClO4 e) HNO3 m) HClO3 f) S8 n) HClO2 g) CH2Cl2 o) HClO h) SCl2 p) K2SO4 2 2013-08-04 C) A Nomenclature Proposal MORE GENERAL OBSERVATIONS Problematic of Nomenclature Coverage in Textbooks • Flow charts of various complexities (relatively often!) Flow charts, rules, … and tables, tables, tables … (Memorization!) ü From 3-box flow charts to 14-box ones GENERAL OBSERVATIONS • Link with acid/base concepts (sometimes, but rarely!) • Appears in chapters 2 or 3 of textbooks (often!) ü So, it is to be covered “at once”; as a single topic. -
Principles of Chemical Nomenclature a GUIDE to IUPAC RECOMMENDATIONS Principles of Chemical Nomenclature a GUIDE to IUPAC RECOMMENDATIONS
Principles of Chemical Nomenclature A GUIDE TO IUPAC RECOMMENDATIONS Principles of Chemical Nomenclature A GUIDE TO IUPAC RECOMMENDATIONS G.J. LEIGH OBE TheSchool of Chemistry, Physics and Environmental Science, University of Sussex, Brighton, UK H.A. FAVRE Université de Montréal Montréal, Canada W.V. METANOMSKI Chemical Abstracts Service Columbus, Ohio, USA Edited by G.J. Leigh b Blackwell Science © 1998 by DISTRIBUTORS BlackweilScience Ltd Marston Book Services Ltd Editorial Offices: P0 Box 269 Osney Mead, Oxford 0X2 0EL Abingdon 25 John Street, London WC1N 2BL Oxon 0X14 4YN 23 Ainslie Place, Edinburgh EH3 6AJ (Orders:Tel:01235 465500 350 Main Street, Maiden Fax: MA 02 148-5018, USA 01235 465555) 54 University Street, Carlton USA Victoria 3053, Australia BlackwellScience, Inc. 10, Rue Casmir Delavigne Commerce Place 75006 Paris, France 350 Main Street Malden, MA 02 148-5018 Other Editorial Offices: (Orders:Tel:800 759 6102 Blackwell Wissenschafts-Verlag GmbH 781 388 8250 KurfUrstendamm 57 Fax:781 388 8255) 10707 Berlin, Germany Canada Blackwell Science KK Copp Clark Professional MG Kodenmacho Building 200Adelaide St West, 3rd Floor 7—10 Kodenmacho Nihombashi Toronto, Ontario M5H 1W7 Chuo-ku, Tokyo 104, Japan (Orders:Tel:416 597-1616 800 815-9417 All rights reserved. No part of Fax:416 597-1617) this publication may be reproduced, stored in a retrieval system, or Australia BlackwellScience Pty Ltd transmitted, in any form or by any 54 University Street means, electronic, mechanical, Carlton, Victoria 3053 photocopying, recording or otherwise, (Orders:Tel:39347 0300 except as permitted by the UK Fax:3 9347 5001) Copyright, Designs and Patents Act 1988, without the prior permission of the copyright owner. -
Safety Data Sheet
SAFETY DATA SHEET Issue Date 13-Apr-2017 Revision Date 13-Apr-2017 Version 2.1 Page 1 / 17 1. IDENTIFICATION Product identifier Product Name Chromium 1 Reagent Other means of identification Product Code(s) 204399 Safety data sheet number M00033 UN/ID no UN3262 Recommended use of the chemical and restrictions on use Recommended Use Laboratory reagent. Determination of chromium. Uses advised against None. Restrictions on use None. Details of the supplier of the safety data sheet Manufacturer Address Hach Company P.O.Box 389 Loveland, CO 80539 USA (970) 669-3050 Emergency telephone number (303) 623-5716 - 24 Hour Service (515)232-2533 - 8am - 4pm CST 2. HAZARDS IDENTIFICATION Classification Regulatory Status This chemical is considered hazardous by the 2012 OSHA Hazard Communication Standard (29 CFR 1910.1200) Acute toxicity - Oral Category 4 Acute toxicity - Inhalation (Dusts/Mists) Category 4 Skin corrosion/irritation Category 1 Sub-category A Serious eye damage/eye irritation Category 1 Hazards not otherwise classified (HNOC) Not applicable Label elements Signal word - Danger Obtained by Global Safety Management, www.globalsafetynet.com, (877) 683-7460 Product Code(s) 204399 Product Name Chromium 1 Reagent Issue Date 13-Apr-2017 Revision Date 13-Apr-2017 Version 2.1 Page 2 / 17 Hazard statements H302 - Harmful if swallowed H314 - Causes severe skin burns and eye damage H332 - Harmful if inhaled Precautionary statements P264 - Wash face, hands and any exposed skin thoroughly after handling P270 - Do not eat, drink or smoke when using this product P271 - Use only outdoors or in a well-ventilated area P260 - Do not breathe dust/fume/gas/mist/vapors/spray P280 - Wear protective gloves/protective clothing/eye protection/face protection P304 + P340 - IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing P312 - Call a POISON CENTER or doctor/physician if you feel unwell P305 + P351 + P338 - IF IN EYES: Rinse cautiously with water for several minutes. -
HYSYS OLI Interface
HYSYS® 2004.2 OLI Interface Reference Guide Copyright October 2005 Copyright © 1981-2005 by Aspen Technology, Inc. All rights reserved. Aspen Accounting.21™, Aspen ACM Model Export, Aspen ACOL™, Aspen ACX™ Upgrade to ACOL™, Aspen Adsim®, Aspen Advisor™, Aspen Aerotran®, Aspen Alarm & Event™, Aspen APLE™, Aspen Apollo™, Aspen AtOMS™, Aspen Batch and Event Extractor, Aspen Batch Plus®, Aspen Batch.21™, Aspen Batch.21™ CBT, Aspen BatchCAD™, Aspen BatchSep™, Aspen Blend Model Library™, Aspen Blend™, Aspen BP Crude Oil Database, Aspen Calc CBT, Aspen Calc™, Aspen Capable-to-Promise®, Aspen CatRef®, Aspen Chromatography®, Aspen Cim-IO Core™, Aspen Cim-IO™ for @AGlance, Aspen Cim-IO™ for ABB 1180/ 1190 via DIU, Aspen Cim-IO™ for Bailey SemAPI, Aspen Cim-IO™ for DDE, Aspen Cim-IO™ for Eurotherm Gauge via DCP, Aspen Cim-IO™ for Fisher-Rosemount Chip, Aspen Cim-IO™ for Fisher-Rosemount RNI, Aspen Cim-IO™ for Foxboro FOXAPI, Aspen Cim-IO™ for G2, Aspen Cim-IO™ for GE FANUC via HCT, Aspen Cim-IO™ for Hitachi Ex Series, Aspen Cim-IO™ for Honeywell TDC 3000 via HTL/access, Aspen Cim-IO™ for Intellution Fix, Aspen Cim-IO™ for Measurex MCN, Aspen Cim-IO™ for Measurex ODX, Aspen Cim-IO™ for Moore Apacs via Nim (RNI), Aspen Cim-IO™ for OPC, Aspen Cim-IO™ for PI, Aspen Cim- IO™ for RSLinx, Aspen Cim-IO™ for SetCim/InfoPlus-X/InfoPlus.21, Aspen Cim-IO™ for Toshiba Tosdic, Aspen Cim-IO™ for ULMA 3D, Aspen Cim-IO™ for Westinghouse, Aspen Cim-IO™ for WonderWare InTouch, Aspen Cim-IO™ for Yokogawa ACG10S, Aspen Cim-IO™ for Yokogawa EW3, Aspen Collaborative Forecasting™, -
Nomenclature of Inorganic Chemistry (IUPAC Recommendations 2005)
NOMENCLATURE OF INORGANIC CHEMISTRY IUPAC Recommendations 2005 IUPAC Periodic Table of the Elements 118 1 2 21314151617 H He 3 4 5 6 7 8 9 10 Li Be B C N O F Ne 11 12 13 14 15 16 17 18 3456 78910 11 12 Na Mg Al Si P S Cl Ar 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe 55 56 * 57− 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 Cs Ba lanthanoids Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn 87 88 ‡ 89− 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 Fr Ra actinoids Rf Db Sg Bh Hs Mt Ds Rg Uub Uut Uuq Uup Uuh Uus Uuo * 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu ‡ 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr International Union of Pure and Applied Chemistry Nomenclature of Inorganic Chemistry IUPAC RECOMMENDATIONS 2005 Issued by the Division of Chemical Nomenclature and Structure Representation in collaboration with the Division of Inorganic Chemistry Prepared for publication by Neil G.