Question

An element X has mass number 27 and the number of neutron is 14.Identify the group number and period of X.

Answer 1

atomic no = mass no - no of neutron
=27-14
=13
electronic configration = 2,8,3
so,
group = 13

and period = 3

hope this helps u :)

Answer 2

Mass Number : 27
No. of neutron : 14

Now,
Atomic number = no. of protons

No. of protons = mass number - no. of neutron

no. of protons = 27 - 14 = 13

So, atomic number = 13

Therefore,

Group Number = 13

Period = 3

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