The atomic number and mass number of sodium are 11 and 23 respectively. What information is conveyed by this statement ?

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Solution

Here the atomic number of sodium given is = 11

It conveys the information that the number of protons and electrons = 11

As given, the mass number is 23, it shows the sum of protons and neutrons.

So, the number of neutrons = mass number – number of protons = 23 – 11 = 12

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