Question

A group of two or more non-metals which has negative charge on it is called-

• A. ion.
• B. complex ion.
• C. radical.
• D. none of these.

Answer 1

The correct option is C

radical.

The explanation for the correct option:

(C) radical:

• A group of two or more non-metals that has a negative charge on it is called radical.
• It is also called a polyatomic anion.
• Example: ${{\mathrm{SO}}_4^{2-}}_{}$

The explanation for incorrect options:

(A) ion:

• The chemical species which have a positive or negative charge of some magnitude are called ions.
• An element carrying a positive charge called a cation and which carries a negative charge is called an anion.
• Example: ${\mathrm{Na}}^{+},{\mathrm{Cl}}^{-}$

(B) complex ion:

• The ions in which central metal ion is bonded to one or more molecules or ions are called complex ions.
• Example: $[\mathrm{Fe}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6{]}^{2+}$

Hence, option (C) is correct. i.e., A group of two or more non-metals that has a negative charge on it is called radical.