Question

contributes basically no mass to an atom​

Answer 1

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When considering atomic mass, it is customary to ignore the mass of any electrons and calculate the atom's mass based on the number of protons and neutrons alone.

Electrons contribute greatly to the atom's charge, as each electron has a negative charge equal to the positive charge of a proton

Answer 2

Answer:

Automatic mass

Although similar in mass, protons are positively charged, while neutrons have no charge. Therefore, the number of neutrons in an atom contributes significantly to its mass, but not to its charge. ... Protons, neutrons, and electrons: Both protons and neutrons have a mass of 1 amu and are found in the nucleus.

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