asked 193k views
1 vote
Witch component of the atom has the least mass. A. protons

B. electrons
C. neutrons
D. all the same size

1 Answer

4 votes
Protons and Neutrons are the same size and have the same mass (1Amu)

If you notice, atomic mass is protons + Neutrons.

The mass of an electron is so small that it is often neglected in terms of calculations.

B electrons is the answer
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User Ian Yang
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