Ch.2 - Atoms & ElementsWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: An iron(II) ion has: (a) 24 electrons and a charge of 2+ (b) 28 electrons and a charge of 2+ (c) 28 electrons and a charge of 2- (d) 26 electrons and a charge of 2+ (e) 24 electrons and a charge of 2-

Solution: An iron(II) ion has: (a) 24 electrons and a charge of 2+ (b) 28 electrons and a charge of 2+ (c) 28 electrons and a charge of 2- (d) 26 electrons and a charge of 2+ (e) 24 electrons and a charge of 2-

Problem

An iron(II) ion has: 

(a) 24 electrons and a charge of 2+ 

(b) 28 electrons and a charge of 2+ 

(c) 28 electrons and a charge of 2- 

(d) 26 electrons and a charge of 2+ 

(e) 24 electrons and a charge of 2-


Solution

Iron has atomic number of 26 which means it has 26 protons and 26 electrons. (II) denotes a charge of +2 

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