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CBSE Class 10 Answered

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 | 15 Mar, 2013, 10:07: AM
answered-by-expert 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 | 16 Mar, 2013, 06:00: AM

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