Chapter 6, Problem 69E

Interpretation Introduction

Interpretation:

Given names, formulas are to be written; given formulas, names are to be written.

Phosphorus pentachloride, HPO₄^2-, CuO, ammonia

Concept introduction:

Generally, the chemical compounds are made up of polyatomic ions and the ratio of positive to negative ions present in the substance is expressed as formula of ionic compound. 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. Usually, the number of each kind of atom which makes up the particle generally called as the composition, is denoted by the chemical formula. Besides, at normal temperature seven elements are found as two atoms. The elements are found as single atom particles in the universe. The element which exists in the gas phase as single atoms at temperatures is Helium and the element which found in the solid phase is Lithium. The elemental symbol is used to denote this one atom element and further explain that these atoms are uncombined in nature.