Question

What Happens when an $atom$ combines with another $atom$ to form $compunds$? $EXPLAIN$ with an example...​

Answer 1

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Answer 2

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When atoms combine they gain, lose or share electrons in such a way that the outer shells become chemically complete. ... The valence of an element is the number of electrons the elements gain or loses when it forms compounds with other elements. Electrons in the outermost shell are called valence electron.

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