Question

Question 3.39 Considering the elements B, C, N, F, and Si, the correct order of their non-metallic character is:

(a) B > C > Si > N > F

b) Si > C > B > N > F

(c) F > N > C > B > Si

d) F > N > C > Si > B

Class XI Classification of Elements and Periodicity in Properties Page 95

Answer 1

concept: We know, metallic character in group increases when we move up to down. It means , Non-metallic character in a group decreases from the top to bottom but it increases in a period when we move from left to right.This is because ionisation energy increases in a period and decreases in a group


Here, B, C , N, F , Si are given.
after understanding concept you can easily get order of Non-metallic character.
F has highest ionisation energy also it is last in period { before Nobel gas } hence, it has more Non-metallic character.

Hence, order after seeing position and ionisation properties of elements in periodic table is F > N > C > B > Si

Hence, Option (C) is correct.

Answer 2

Hence, order after seeing position and ionisation properties of elements in periodic table is F > N > C > B > Si

Hence, Option (C) is correct.