Question

Which of the following compound is ionic?

• A. $\mathrm{KCl}$
• B. ${\mathrm{CH}}_4$
• C. Diamond
• D. ${\mathrm{H}}_2$

Answer 1

The correct option is A

$\mathrm{KCl}$

Explanation for correct option:

(A)$\mathrm{KCl}$

• Ionic compounds can be defined as neutral compounds composed of negatively charged ions( anions) and positively charged ions (cations).
• Potassium chloride ($\mathrm{KCl}$) is an ionic compound comprising positively charged Potassium ions(${\mathrm{K}}^{+}$) and negatively charged Chloride ions($C{l}^{-}$).

Hence, option(A) is the correct option.

Explanation for incorrect options:

(B)${\mathrm{CH}}_4$

• Methane(${\mathrm{CH}}_4$) is formed by the formation of covalent bonding between one Carbon and four Hydrogen atoms.
• Methane is basically a molecular compound formed by sharing of electrons.
• It is not an ionic compound as there are no ions involved.

(C)Diamond

• Diamond is not a compound.
• It is a solid form consisting of purely the element Carbon($\mathrm{C}$).
• It is not an ionic compound as there are no ions involved.

(D)${\mathrm{H}}_2$

• Hydrogen(${\mathrm{H}}_2$) is not a compound.
• It is a molecule consisting of two hydrogen atoms bonded to themselves.
• It is not an ionic compound as there are no ions involved.

Hence, option(A) is the correct option.