Why is the valency of helium is 0
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the valency of helium is zero because...
Explanation:
Helium has one shell(k) which requires two electrons so outermost shell is filled ,no need to gain or lose electrons..ⓢⓞ ⓣⓗⓔ ⓥⓐⓛⓔⓝⓒⓨ ⓞⓕ ⓗⓔⓛⓘⓤⓜ ⓘⓢ ⓣⓐⓚⓔⓝ ⓐⓢ ⓩⓔⓡⓞ....
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