Which formula represents a compound that is formed primarily by sharing electrons

The question is incomplete, here is a complete question.

Which formula represents a compound that is formed primarily by sharing electrons?

1. KCl

2. CaCl₂

3. CrCl₃

4. CCl₄

Answer : The correct option is, (4) CCl₄

Explanation :

Covalent compound : It is defined as the compound which is formed by the sharing of electrons between the atoms forming a compound.

The covalent compound are usually formed when two non-metals react.

Ionic compound : It is defined as the compound which is formed when electron gets transferred from one atom to another atom.

Ionic compound are usually formed when a metal reacts with a non-metal.

(1) KCl

is an ionic compound because potassium element is a metal and chlorine element is a non-metal. The bond formed between a metal and a non-metal is always ionic in nature.

(2) CaCl₂

an ionic compound because calcium element is a metal and chlorine element is a non-metal. The bond formed between a metal and a non-metal is always ionic in nature.

(3) CrCl₃

an ionic compound because chromium element is a metal and chlorine element is a non-metal. The bond formed between a metal and a non-metal is always ionic in nature.

(4) CCl₄

is a covalent compound because sharing of electrons takes place between carbon and chlorine. Both the elements are non-metals and hence, will form covalent bond.

Hence, the formula represents a compound that is formed primarily by sharing electrons is, CCl₄

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