What is the mass of the protons and neutrons that are found in an atom?

Answer 1

Protons and neutrons have a mass of approximately 1 amu (atomic mass unit). The electrons way so little that we usually do not count their mass. To find the Atomic Mass, you need to add the number of protons to the number of neutrons in an atom.

Answer 2

Proton: 1,007 276 466 77(10) atomic mass units (u)

Neutron: 1,008 664 915 6 (6) atomic mass units (u)

Electron: 5,485 799 094 3(23).10-4 atomic mass units (u)

Answer 3

proton mass = 1.00727638 amu = 1.6726 x 10-27 kg

neutron mass = 1.0086649156 amu = 1.6749 x 10-27 kg

Answer 4

Measured in amu (Atomic Mass Units):

Neutron: 1.008664916

Proton: 1.007276466812

Widely accepted as both being 1 amu

Answer 5

mass of a proton = 1.672622 x 10−27 kg

mass of a neutron = 1.674927× 10−27 kg

Answer 6

protons an neutrons masses are so close that they are usually considered to have the same mass.

Answer 7

Protons and neutrons are sub atomic particles. They are in the nucleus of an atom. The mass of both protons and neutrons is the atomic mass.

Answer 8

Proton: 1,007 276 466 77(10) atomic mass units (u)

Neutron: 1,008 664 915 6 (6) atomic mass units (u)

Electron: 5,485 799 094 3(23).10-4 atomic mass units (u)

Answer 9

Depends on what kinda atom it is

Answer 10

12u