the atomic number of beryllium is 4 than that of oxygen is 8 write down the electronic configuration of the two and deduce their valency from the same
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electronic confirmation of Be is 1s2 2s2
electronic configuration of O is 1s2 2s2 2p4
valency of Be is 2
valencia of O is 2
electronic configuration of O is 1s2 2s2 2p4
valency of Be is 2
valencia of O is 2
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the balancey of Oxygen is 2
and beryllium is 2
and beryllium is 2
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