Answers

  • Brainly User
2016-03-08T10:47:51+05:30
In any group of elements, the tendency to lose valence electrons increases in going from top to bottom.Actually an extra shell will be added to every period....

Hope this helps u.............^_^

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PLZ mark it as the brainliest if helpful.......
2016-03-08T11:07:11+05:30
In the group of elements, they have the tendency to lose electrons mostly which is in the outermost orbit or shell.. So it leads to its valency... ^_^
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