Answers

2015-09-15T16:16:23+05:30
Metals are hard non metals are not hard.

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METALS ARE THE ELEMENTS WHICH FORM POSITIVE IONS BY LOSING ELECTRON. WHILE, NON METALS ARE THE ELEMENT WHICH DON'T FORMS POSITIVE IONS BY LOSING ELECTRONS.
2015-09-15T16:17:04+05:30
When an element has 2 ,1,3,4 electrons on it outermost shell it is a metal and when it has5,6,7 it is a nonmetal

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