Chapter 6, Problem 62E

Interpretation Introduction

Interpretation:

In each box, when given a formula, the name is to be written and for a given name, the formula is to be written. Refer to nothing but the periodic table printed on your shield.

Formula	Name	Name	Formula
SeO42-(Se, selenium, Z = 34)		Gallium sulfate (Gallium, Z = 31)
HCO3-		Perchloric acid
Ne		Lithium
N2O5		Cobalt(II) chloride hexahydrate
HNO2		Barium dihydrogen phosphate
CI4		Hydrosulfuric acid
BaH2		Magnesium nitride
CaTeO3 (Te, tellurium, Z = 52)		Selenic acid (Selenium, Z = 34)
HBrO		Calcium sulfite
Fe(NO3)2		Sodium hydride
MgSO4. 7H2O		Mercury(I) chloride

Concept introduction:

Most of the chemical compounds exist as a polyatomic ion and the ratio of positive to negative ions present in the substance is expressed as formula of ionic compound. The formula of a chemical compound is given by the lowest whole number ratio of ions in the compound and it is called as a formula unit. Some elements form monoatomic ions having different charges and to differentiate the two ions, size of the charge of ions is included when naming the ion. For group 1A, 2A, 5A-7A elements the charge is not included while naming the ion. In common, the charge is given in the name of an ion only when the ions of an element display more than one charge which is common. In other words, when an ionic compound having a metal that can exist in more than one ionic charge, is named the charge of metal atom should be included in the compound name.