First slide

Periodicity in atomic properties

Question

Which one of the following is correct order of the size

Moderate

A

$I > I^{-} > I^{+}$
B

$I > I^{+} > I^{-}$
C

$I^{+} > I^{-} > I$
D

$I^{-} > I > I^{+}$

Solution

The size of the cation is always smaller than that of its parent atom and size of the anion is always larger than that of its parent atom.
$∴$ $Size of the cation \propto \frac{1}{magnitude of positive charge}$
Size of the anion c magnitude of negative charge.
Hence, the correct order of the size is $I^{-} > I > I^{+}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App