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The number of elements which can be acco...

The number of elements which can be accommodated in the present set-up of the long from of the periodic table is :

A

120

B

118

C

122

D

124

Text Solution

Verified by Experts

The correct Answer is:
B
In the present set-up, on the basis of Aufbau principle and four blocks of elements, the last period, i.e., 7th period can accommodate 32 elements `(7s^(2), 5f^(14) , 6d^(10) , 7p^(6) )` . Thus, total elements that can be accommodated are 118 (86 upto 6th period plus 32 in the 7th period).
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