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: Write the symbol for each of the following ions: (a) the ion with a 3+ charge, 28 electrons, and a mass number of 71

Solution: Write the symbol for each of the following ions: (a) the ion with a 3+ charge, 28 electrons, and a mass number of 71

Problem

Write the symbol for each of the following ions: 

(a) the ion with a 3+ charge, 28 electrons, and a mass number of 71

Solution

Let's start with the charge. We have a +3 charge for this ion, which means it needs 3 more electrons in order to be neutral.

Knowing this we can add 3 electrons to the given number of electrons of the ion to know what is the number of electrons for the neutral form.


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