Question

Arrange the following elements in the increasing order of electronegativity.

• A. $C,N,Si,P$
• B. $N,Si,C,P$
• C. $Si,P,C,N$
• D. $P,Si,N,C$

Answer 1

Answer: (C)

$Si,P,C,N$

In a group, electronegativity decreases as the size increases, which leads to the ability to attract electrons decrease. Thus, $P<N$ and $Si<C$.

In a period, as the size decreases, electronegativity increases due to the increase in effective nuclear charge.

Thus, $C<N$ and $P<Si$. Hence, the overall order is $Si<P<C<N$.

Hence, the correct option is $\text{C}$