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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 March 2013, 10:07 AM
Answered by 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.
Answered by Expert 16th March 2013, 6:00 AM
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