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Comparison of Atoms Particle

Comparison of Atoms Particle


Table: Comparison of mass, charge and specific charge of electron, proton and neutron

Name of constant

Unit

Electron(e)

Proton(p+)

Neutron(n)

 

Mass (m)

Amu

Kg

Relative

0.000546

9.109 × 10–31

1/1837

1.00728

1.673 × 10–27

1

1.00899

1.675 × 10–27

1

 

Charge(e)

 

Coulomb (C)

Esu

Relative

– 1.602 × 10–19

– 4.8 × 10–10

– 1

+1.602 × 10–19

+4.8 × 10–10

+1

Zero

Zero

Zero

Specific charge (e/m)

C/g

1.76 × 108

9.58 × 104

Zero

Density

Gram / cc

2.17×10-17

1.114×14

1.5×10-14

 

* The atomic mass unit (amu) is 1/12 of the mass of an individual atom of 6C12, i.e.. 1.66×10-27kg

 

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