Question

what is the mass of an atom with 1 proton, 0 neutrons, and 1 electron? 0amu 1amu 2amu 3amu

Explanation:

Step1: Recall mass of sub - atomic particles

Proton mass ≈ 1 amu, neutron mass ≈ 1 amu, electron mass ≈ 0 amu.

Step2: Calculate atomic mass

Atomic mass = (Number of protons × proton mass)+(Number of neutrons × neutron mass)+(Number of electrons × electron mass).
Substitute values: (1×1)+(0×1)+(1×0)=1 amu.

Answer:

1 amu