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Why helium with atomic no. 2 …

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Why helium with atomic no. 2 is been placed in 18th group despite it should be in 12th group?

Posted by Aditya Panchal 6 years, 9 months ago

CBSE > Class 10 > Science

4 answers

Bhoomika Chadha 6 years, 9 months ago

We need not to study 3 to 12 period

Online Only On Brnly Geniusvatsone 6 years, 9 months ago

Because it has same property as the elements of group 18...that is unreactive

Ansh Garg 6 years, 9 months ago

Because it is inert element

Aweeeeeeeeeeesome Khanna 6 years, 9 months ago

Helium is a noble gas, all the elements in the 18 group are noble gases

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