Helium atom has two electrons in its valence shell but its valency is zero. Explain.

Asked by gpnkumar0 | 11th Mar, 2017, 12:37: PM

Expert Answer:

Dear TopperLearning User,
Hint to the raise query: Helium completes a duplet with its electronic configuration being 1s2. It generally do not take part in chemical reactions and is considered a zero valent element.
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Answered by Sivanand Patnaik | 11th Mar, 2017, 04:40: PM

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