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The fourth period of modern periodic tab...

The fourth period of modern periodic table includes:

A

8 elements

B

18 elements

C

32 elements

D

unknown elements

Text Solution

Verified by Experts

The correct Answer is:
B
No. of elements in a period. If n = even ` rArr ( (n+2)/(2) )^2 xx 2 ` , If n = odd `rArr ( (n+1)/(2) )^2 xx 2`
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