Note: In the following question No. 8, 1 mark will be awarded for correct
answer and (1/2) mark will be deducted for every wrong answer.

8.(a) Arrange as directed.

Increasing electronegativity     Si, N, P, C

Solution:
Electronegativity increases across the period and decreases down the group.
So, the order for the given elements is:
Si < P < C < N

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In a period, electronegativity increases from left to right.
In a group, the electronegativity decreases down the group

​​​​​​​Therefore,

Si < P < C < N

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