Question

A chlorine ion is positively charged.

• A. True
• B. False

Answer 1

The correct option is B False

Definition of valency.

• The number of valence electrons lost or gained by an atom in order to attain stability is called valency.
• Atomic number of chlorine = 17
• Electronic configuration = 2,8,7
• $$\begin{gathered} \mathrm{Cl}+1{\mathrm{e}}^{-}\to {\mathrm{Cl}}^{-} \\ 2,8,72,8,8 \end{gathered}$$
• A chlorine atom has 17 protons and 17 electrons and is electrically neutral.
• When it gains an electron to become stable, it has 17 protons and 18 electrons. As it has an extra electron a chloride ion has one unit negative charge.

Therefore the given statement is false.