When the mass of the boron atom is calculated, the mass of the electrons is ignored. Why is the mass of the electrons ignored?

Md Ariful Islam

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Md Ariful Islam

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The mass of a proton is approx. $1.673×10^(−27)* kg$; the mass of a neutron is slightly larger. On the other hand, the rest mass of an electron is approx. $9.119xx10^-31*kg$, approx. 4 orders of magnitude difference. Should electron mass be ignored, we are not going to sacrifice too much accuracy.

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