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29/12/2020 4:27 pm
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If Z = 3, what would be the valency of the element? Also, name the element.
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29/12/2020 4:28 pm
The electronic configuration of (Z) = 2,1 Thus, outermost shell has 1 electron. So, its valency = 1 Atomic number (Z) = 3, So name of the element is lithium.