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Question

Chemistry Question on Some basic concepts of chemistry

The electronegativities of N,C,SiN, C, Si and P are in the order

A

P < Si < C < N

B

Si < P < N < C

C

Si < P < C < N

D

P < Si < N < C

Answer

Si < P < C < N

Explanation

Solution

Electronegativity increases on moving left to right in a period and decreases for the period below it (n=(\because n= increases ))
(N\because( N and C)C ) and (Si( Si and P)P ) respectively belongs to (n=2)(n=2) and (n=3)(n=3)
\therefore Electronegativity of N>N > electronegativity of CC and electronegativity of P>P > electronegativity of SiSi Hence, correct order is:

Si<P<C<NSi < P < C < N