Arrange the following elements in the order of their increasing non-metallic character.
$L i, O, C, B e, F$

O < F < C < B e < L i

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L i < B e < C < O < F

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F < O < C < B e < L i

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F < O < B e < C < L i

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Solution

The correct option is C $L i < B e < C < O < F$
On moving from right to left in a period, the non-metallic character decreases (metallic character increases), as the atomic size increases and the force of attraction between the nucleus and the outermost electron decreases.
Therefore, on moving from right to left in a period, the ability to gain electron (non-metallic character) decreases. Therefore, the order is $L i < B e < C < O < F$ .

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Question 18
Arrange the following elements in the order of their increasing nonmetallic character
Li, O, C, Be, F
(a) F < O < C < Be < Li
(b) Li < Be < C < O< F
(c) F < O < C < Be < Li
(d) F < O < Be < C < Li

Q. The elements of one period are given below in order from left to right:-

L i, B e, B, C, O, F, N e

Place the elements

F, B e

and

N

in order of increasing electro-negativity.

Q. The correct increasing order for second ionization energy of

H e, L i, B e, B, C, N, O, F, N e

is :

Q. Correct orders of 1st ionisation potential are :
(a)

L i < B < B e < C

(b)

O < N < F

(c)

B e < N < N e

Q. Observe the following elements from second period:

L i, B e, B, C, N, O, F, N e

What is common in them?

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Arrange the following elements in the order of their increasing non-metallic character. Li, O, C, Be, F

Arrange the following elements in the order of their increasing non-metallic character.
$L i, O, C, B e, F$