Question

atomic no. of calcium is 20 and of oxygen is 8 state the no. of electrons calcium loses and oxygen to attain stable. electronic configuration of the nearest noble gas during formation of electrovalent molecule calcium oxide
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Answer 1

Answer:

I think this is the answer

Explanation:

Atomic number of calcium is 20, electronic configuration 2, 8, 8, 2 has 2 valence electrons which Ca loses as it is not possible to gain 6 electron (to have octet arrangement) to have stable nearest noble gas K configuration. ∴ Calcium oxide CaO electrovalent molecule is formed