Answers

2014-06-04T16:49:57+05:30
Elements in the same group have similar properties due to the fact that they have the same number of electrons in their outermost charge shell. Elements with 3 or fewer electrons in that shell tend to be metals and those with 4 or more are considered as non metals. ...................
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2014-06-04T16:55:47+05:30
Elements in the same group have similar properties because they have same number of electron in their outer most shell.Those with 3 or fewer electron in that shell tends to be metals and those with 4 or more are non-metals. 
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they have same number electrons in shell