The electronic configuration of an element is 2,8 7 to which groups and period it belong
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the element is chlorine
the valency is 1
period number =3
group number =17
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the valency is 1
period number =3
group number =17
hope that this will help you.....
mark the brainliest
plz follow me
Answered by
12
chlorine in group 17 and period 3
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