which contributes more to an atom's mass: electrons or protons? which contributes more to an atom's size?

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18-11-2022
Chemistry

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which contributes more to an atom's mass: electrons or protons? which contributes more to an atom's size?

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QWTiffany QWTiffany · Answer 1 · 2022-11-22T22:19:00-05:00

Proton is responsible for increased atomic mass and electron is responsible for increased atomic size.

The mass of proton is more than electron by about 2000 times. Additionally, the size of atom is more than the nucleus by 10000 times. The atom contains proton, neutron and electron. Out of these, proton is positively charged, electron is negative charged that balances each other. Neutron is neutral in nature.

Protons are present at the centre of an atom and are equal to the atomic number. Based on the number of protons, there are equal amount of electrons in balanced ion having net charge of zero.

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