An element 'x' (atomic no 20) burns in presence of o2 to form oxide (a) electronic configuration
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2 ,8 ,8 ,2 and oxide is CaO
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element with atomic number 20 is calcium and it's electronic configuration is 2,8,8,2 now when it combines with oxygen (2,8,6 ) it gives two electrons and acquires octet and forms cao
hope helps
@Ananya
element with atomic number 20 is calcium and it's electronic configuration is 2,8,8,2 now when it combines with oxygen (2,8,6 ) it gives two electrons and acquires octet and forms cao
hope helps
@Ananya
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