Question

If K & L shells are completely filled and M shell contains 5 electrons

i) What would be the atomic number of that element?

ii) Identify the element.

iii) Calculate the valency of that element.​

Answer 1

Explanation:

No of electrons = 2+8+5 = 15

1. Atomic number = no of e = 15
2. Element = Phosphorus {P}
3. Valency = 8-5 = 3

Answer 2

Answer:

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Explanation:

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