Question

Arrange the following set of atoms in the order of increasing atomic radius: $F,Cl,C,O$:

• A. $F,Cl,O,C$
• B. $C,O,F,Cl$
• C. $O,C,F,Cl$
• D. $F,O,C,Cl$

Answer 1

The correct option is D $F,O,C,Cl$

Atomic radius increases towards the left in a period

Thus $C>O>F$

Also Chloride belongs to third period and others to second . So, Cl is larger

Thus correct order is;-

$F<O<C<Cl$