Science, asked by atai69613, 2 months ago

an element Y has mass number 35 and number of neutrons is 18 . write the atomic number and electronic configuration of Y also write group number period number and valency of X

Answers

Answered by skprincktr

0

Answer:

Atomic number of element Y is 17 and Electronic configuration is 2,8,7

Group number is 17 and period number is 3 and valency is 1.

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