Question

teacher wrote the electronic configuration of an atom of an element as 2, 8, 7, what is the atomic number of this element ? (a) 7 (b) 2 (c) 17 (d) 8​

Answer 1

Answer:

c

Explanation:

atomic number is 17 and it is chlorine atom...hope it will help

Answer 2

Answer:

c)17

Explanation:

because chlorine atomic no. is 17 and it has configuration of an atom of the element as 2,8 7

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