Question

Which of the following compounds is a covalent compound (i.e., molecular)? A. SF6 B. NH4OH C. Al(CN)3 D. Co3N2

Answer 1

C. Al(CN)3
is the answer

Answer 2

Answer: The correct answer is Option A.

Step-by-step explanation:

Covalent compound is defined as the compound which is formed by the sharing of electrons between the atoms forming a compound. These are usually formed when two non-metals react.

An ionic compound is defined as the compound which is formed when electron gets transferred from one atom to another atom. These are usually formed when a metal reacts with a non-metal or a metal reacts with a polyatomic ion or a reaction between two polyatomic ions takes place.

For the given options:

• Option A:
  `SF_6`

Sulfur and fluorine, both are non-metals and they will form a covalent compound.

• Option B:
  `NH_4OH`

This compound is formed by the combination of
`NH_4^+\text{ and }OH^-` ions. These two are polyatomic ions and thus will form an ionic compound.

• Option C:
  `Al(CN)_3`

This compound is formed by the combination of aluminium which is a metal and
`CN^-` ion which is a polyatomic ion. Thus, it will form an ionic compound.

• Option D:
  `Co_3N_2`

This compound is formed by the combination of cobalt which is a metal and nitrogen which is a non-metal. Thus, it will form an ionic compound.

Hence, the correct answer is Option A.