Q.9. The electronic configurations of three elements X, Y and Z are X-2,8; Y-2, 8, 7 and 2-2,8,2 Whichof the following is correct?(a) X is a metal(b) Y is a metal(c) Z is a non-metal(d) Y is a non-metal and Z is a metalINCERT Exemp.

Q.9. The electronic configurations of three elements X, Y and Z are

1.	Q.9. The electronic configurations of three elements X, Y and Z are X-2,8; Y-2, 8, 7 and 2-2,8,2 Whichof the following is correct?(a) X is a metal(b) Y is a metal(c) Z is a non-metal(d) Y is a non-metal and Z is a metalINCERT Exemp.
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