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CBSE Class 10 Answered

The valency of an element whose electronic configuration is 2
Asked by vermamahima021982 | 27 Aug, 2019, 09:50: PM
Expert Answer
An element has atomic no. 2 and electronic configuration 1s2 then its valency is zero because it has completed its duplet.
 
In case of an element has 2 electrons in its outermost shell will have valency two since to complete the octet it has to loosen those two electrons.
Answered by Ramandeep | 28 Aug, 2019, 11:46: AM

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