answer tis please..!
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1. Element A is a metal as it's in 1 st group I.e. has valency 1
2. Element B has larger atomic size than c as the atomic size decreases along a period
3. Element C has a valency 1 as it's electronic configuration is 2, 7 as it is present in 17th group and 2nd period (no. of period = no. of shells)
Hope this helps u
2. Element B has larger atomic size than c as the atomic size decreases along a period
3. Element C has a valency 1 as it's electronic configuration is 2, 7 as it is present in 17th group and 2nd period (no. of period = no. of shells)
Hope this helps u
ntnitya19:
thanks a lot...
My pleasure
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