if atomic number of Na atom is 11 and mass no. is 23 , what is the atomic no. and atomic mass of sodium ion ?

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Solution

When an atom form ion there is only change in number of electrons.
Since Atomic number = number of proton = does not change
Mass number = Number of proton + number of neutron = does not change
So the atomic number and mass number will be same for Na atom and Na ion.

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