Question

The atomic number of sodium is 11 and its mass number is 23. It has

Answer 1

HEY!!

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⚫The atomic number is the number of protons present in the sodium atom and so the number of protons in sodium are 11.

⚫The number of electrons equal the number of protons in a neutral atom.  

⚫Number of electrons is 11. 

⚫The number of neutrons = Mass number -atomic number = 23-11 = 12.

Answer 2

Heya !!

Here is your answer..

No of protons = atomic number.

So, no of proton = 11

Now, no of electrons = no of protons

So we get no. of electrons to be 11.

Also, no of neutron = Atomic mass - atomic number

==> 23 - 11

==> 12

So sodium have 12 neutron, 11 electron and protons.

Hope it helps.