Question

answer this question than I mark it as brainlist ​

Answer 1

hope it helped you...mark it as brainliest

Answer 2

Answer:

It is a Chlorine atom....

a) Group=17

b) Period=3

c) Valence electrons=7

d) Valency=1

e) It is a non-metal

f) No. of protons=17, no. of neutrons=18

I hope it helps.......