Q.

Which of the following relation is correct for boron element?

Here P = period number of boron

 N = number of valence electrons in boron

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a

(P+1)>N

b

(P+1)=N

c

P=N

d

(P+1)<N

answer is C.

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Detailed Solution

Given,

 P = period number of boron

 N = number of valence electrons in boron

Then PB2

B(s)1s2, 2s2, 2p1

Valence shell 2+1=3

N = Valence shell electron =3

p+1=3=N

P+1=N

Hence, the option C is correct

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