Question

Considering the elements $B$ , $C$ , $N$ , $F$ and $Si$ , the correct order of their non-metallic character is

• A. $B>C>Si>N>F$
• B. $Si>C>B>N>F$
• C. $F>N>C>B>Si$
• D. $F>N>C>Si>B$

Answer 1

Answer: (C)

As the ionisation enthalpy decreases down the group, therefore the non-metallic characters also decreases. Similarly, as the ionisation enthalpy increases along a period, consequently the non-metallic character also increases. Thus, the correct order of their non-metallic character is
$F>N>C>B>Si$