Chemistry, asked by Missmanu2612, 9 months ago

an atom has electronic configuration 2 8 7

a) what is the atomic number of this element

b) to which group of the periodic table does this element belong

Answers

Answered by Anonymous

5

the atom is Chlorine

atomic no = 17

grp = 17

Answered by aditya876881

2

Answer:

atomic number 17 and group number 17

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