Question

How to find no of neutrons and electrons in particular at?

Answer 1

If you know the exact atomic number and atomic mass of an element,
the number of electrons= number of protons= atomic number
By this, you find the exact number of electrons.

Now, you know the number of protons and also the atomic mass,
number of neutrons+ number of protons= atomic mass
∴ number of neutrons= atomic mass- no.of protons

Hope it may help you.
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