Question

When a neutral atom is converted into a cation its :

• A. Atomic weight increases
• B. Atomic weight decreases
• C. Size increases
• D. Size decreases

Answer 1

Answer: (D)

When an electron is removed from neutral atom nuclear change per electron increases. As a result size
$\underset{186pm}{\mathrm{Na}}\to \underset{95pm}{N{a}^{\oplus }}{e}^{-}$