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Chapter 5: Problem 127

Give the proper name for the following binary ionic compounds: (a) \(\mathrm{Ca}_{3} \mathrm{~N}_{2}\) (b) \(\mathrm{AlF}_{3}\) (c) \(\mathrm{Na}_{2} \mathrm{O}\) (d) \(\mathrm{CaS}\)

Short Answer

Expert verified
(a) calcium nitride (b) aluminium fluoride (c) sodium oxide (d) calcium sulfide

Step by step solution

01

Identify Cation and Anion in (a)

: In \(\mathrm{Ca}_{3} \mathrm{N}_{2}\), the cation is calcium (Ca) and the anion is nitrogen (N).
02

Name (a) by Ions

: Calcium forms a \(2+\) ion, \(\mathrm{Ca}^{2+}\), and nitrogen forms a \(3-\) ion, \(\mathrm{N}^{3-}\), so the compound is named "calcium nitride".
03

Identify Cation and Anion in (b)

: In \(\mathrm{AlF}_{3}\), the cation is aluminium (Al) and the anion is fluorine (F).
04

Name (b) by Ions

: Aluminium forms a \(3+\) ion, \(\mathrm{Al}^{3+}\), and fluorine forms a \(1-\) ion, \(\mathrm{F}^{-}\), so the compound is named "aluminium fluoride".
05

Identify Cation and Anion in (c)

: In \(\mathrm{Na}_{2} \mathrm{O}\), the cation is sodium (Na) and the anion is oxygen (O).
06

Name (c) by Ions

: Sodium forms a \(1+\) ion, \(\mathrm{Na}^{+}\), and oxygen forms a \(2-\) ion, \(\mathrm{O}^{2-}\), so the compound is named "sodium oxide".
07

Identify Cation and Anion in (d)

: In \(\mathrm{CaS}\), the cation is calcium (Ca) and the anion is sulfur (S).
08

Name (d) by Ions

: Calcium forms a \(2+\) ion, \(\mathrm{Ca}^{2+}\), and sulfur forms a \(2-\) ion, \(\mathrm{S}^{2-}\), so the compound is named "calcium sulfide".

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