Question

an atom of an element x to the power 23 with atomic no. 11
find its
no. of electron
no. of protons
no of neutrons
valency
valence electron
no. of shells
state whether the element is a metal or non metal

Answer 1

the element is Na (SODIUM).
it is a metal belongs to group 1st and period 3rd.
no. of electrons = 11
no. of protons = 11
no. of neutrons = 12
valency = +1

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Answer 2

No.of electron and protons =11
No. of neutrons=23