Answers

The Brainliest Answer!
2016-03-31T22:53:34+05:30
Let element be X
1) K L M[since three electrons in M shell]
 2  8  3
and atomic no =2+8+3=13
2)valency=+3
c) X is Aluminium and it is metal 

1 5 1
2016-04-01T15:51:30+05:30
A) electronic configuration
K L M
2 8 3=13
b) valency =+1
c)the element is lithium.
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