Question

Which of the following formula(s) is/are correct?

• A. NaCl₂
• B. KCl
• C. NaCl₃
• D. KCl₄

Answer 1

Answer: (B), (D)

The correct options are
B

KCl

D

KCl₄

In chemical formulae of a compound, the net charge should be zero.

In $Na{Cl}_2$, +1 – 2 = -1 (Not zero). So, formula is incorrect.

In $KCl$, +1 – 1 = 0. So, formula is correct.

In $Na{Cl}_3$, +1 - 3 = -2 (Not zero). So, formula is incorrect.

In $Ca{Cl}_2$_, +2 - 2 = 0. So, formula is correct.