Question

please ans this !!too much urgent ...please​

Answer 1

Answer:

Atomic number of X =

Mass number of X – No. of neutrons

Atomic number of X = 35 - 18 = 17

Electronic configuration = 2, 8, 7

Group number = 17

Period Number = 3

I Hope It Will Help!

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Answer 2

hey mate

Your answer is in the attachment

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