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Question -

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

  1. B > C > Si > N > F
  2. Si > C > B > N > F
  3. F > N > C > B > Si
  4. F > N > C > Si > B



Answer -

(3) F > N > C > B > Si
Reason:
As we move from left and right in a period the non-metallic characteristic of the elements decreases. Thus, F > N > C > B.
As we move down from a group the metallic character of the elements decreases. Thus, C > Si.
From the above two statements, it can be stated that B > Si.
Thus, F > N > C > B > Si

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