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

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Q. The electronegativities of $C, N, Si$ and $P$ are in the order of

KCETKCET 2017Classification of Elements and Periodicity in Properties

Solution:

Electronegativity increases as we more left to right in a period and decreases as we move down in the group.

(i) $C$ and $N$ belong to the same period. Hence $N$ has more electronegativity than carbon (C).

(ii) In the same way $P$ is more electronegative than Si

(iii) As Si is below the carbon is 14th group the electronegativity of carbons is more than of Si.