1.

Which formula in l board you for finding an electron?

Answer»

Answer:

The mass number is TYPICALLY found at the top. (You might see it at the bottom in the PERIODIC table) and the atomic number at the bottom.

Atomic number/number of PROTONS = 11

Mass number/sum of protons and neutrons = 23

Number of neutrons = 23-11= 12

Number of electrons = 11 (since the sodium ATOM is NEUTRAL)

Explanation:

Like this you can find number of electron

Any Atomic



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