Element 'A' reacts with oxygen to form A2O. state the number of electrons in the outermost shell of A. IS 'A' metal or non metal? Explain in detail

Asked by  | 15th Mar, 2013, 10:07: AM

Expert Answer:

It is a metal. ZFor example, sodium reacts with oxygen and forms Na2O. Oxygen has valency -2, to form a neutral compound  A must have a valncy of +1. So, the formed compound A2O is neutral. A is a metal of group 1.

Aswered by  | 16th Mar, 2013, 06:00: AM

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