Question

The atomic number of sodium is 11. How many
protons are there in the nucleus of sodium
atom? How many electrons does an atom of
sodium contain? How many electrons and
protons does an ion of sodium which has
charge of +1 contain?​

Answer 1

atomic number=11. of Na

no. of electrons=11

in neutral state

protons number=electrons number=11

for....

$Na {}^{ + 1}$

number of protons=11

but number of electrons=11-1=10