Question

An element X has the electronic configuration 2, 8, 7

a) Identify the group and period to which element X belongs.

b) What is the atomic number of element X?

c) Draw the Bohr model of element X.​

Answer 1

Explanation:

atomic number = 2 +8+7 =17

which is chlorine .

chlorine belongs to halogen family hence group 17 and period is 3 .

Answer 2

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