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Question
What is the mass (atomic mass unit) of an electron?
What is the mass (atomic mass unit) of an electron?
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Solution
The correct option is A A beam of protons
An electron actually weighs about 0.00054 a.m.u. This is so much less than the mass of a proton or a neutron that the mass of the electrons is ignored in determining the mass of an atom.
A beam of protons
An electron actually weighs about 0.00054 a.m.u. This is so much less than the mass of a proton or a neutron that the mass of the electrons is ignored in determining the mass of an atom.