Question

Difference between $S$ and $S^{2-}$ as $S^{2-}$ has

• A. larger radii and large size
• B. smaller radii and large size
• C. larger radii and small size
• D. smaller radii and small size

Answer 1

Answer: (A)

larger radii and large size

Answer 2

Difference between $S$ and $S^{2-} \Rightarrow$ larger radii and larger size of $S^{2-}$ As the radii o f the anion is always larger than the atomic radii o f its parent atom. In an anion as electron or electrons are added to the neutral atom the nuclear charge acts on more electrons so that each electron is held less tightly and thereby the electron cloud expands