Question

AN ELEMENT HAS A=23 AND Z=11. CALCULATE ITS e- , n , ITS VALENCY AND NUMBER OF SHELLS - *​

Answer 1

Explanation:

A=23, Z=11(GIVEN)

electrons=11(As no. of protons= atomic number and no.of protons=no. of electrons)

It's valency=1

No. of shells=3

A=(proton + neutron)

23=11+neutron

So, neutron=23-11=12

It is sodium.......