Question

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Answer 1

Explanation:

i)no. of proton=atomic no.=11

ii)no. of electron=no. of proton=11

iii)no. of neutron=mass no. -no. of proton=23-11=12

iv)no. of neulons=no. of proton +no. of neutron =23

v)electronic configuragion=2,8,1

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