Chapter 5, Problem 105E

Interpretation Introduction

Interpretation:

Each substance along with the corresponding view is to be examined and each substance is to be classified as an atomic element, molecular element, molecular compound or an ionic compound.

Concept introduction:

Atomic element comprises of only one type of atoms. Therefore, single atoms are the basic units of an atomic element. For example: sodium, potassium, calcium, magnesium all exist as atomic elements.

Molecular element exists as diatomic molecules in which two atoms of the same element are bonded together. For example: hydrogen exists as $H_2$ molecules, oxygen exists as $O_2$ molecules, etc.

Molecular compounds are compounds of two or more nonmetals. Molecules are the basic units of molecular compounds. For example: ammonia, $N{H}_3$, consists of nonmetal nitrogen and hydrogen.

Ionic compounds are made up of cations (formed by metal) and anions (formed by nonmetal). In ionic compounds, cations and anions are arranged in an alternating three-dimensional array.