Question

find the address of the following elements having atomic number 9​

Answer 1

Answer:

it is 17th group and 2ed period

it was concluded by its electronic configuration

2, 7

the valance electron gives group and number of shells gives the period.......

Answer 2

Answer:

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Electronic Configuration-

K. L.

2. 7

Since 2 shells Therefore the period is $\huge\blue{Second}$

Group number=7+10 (for period 2)

Group is $\huge\pink{Seventeenth}$

Explanation:

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