Proton

Q.

The mass of proton is

1. $1.67\mathrm{x}{10}^{-22}$g

2. $1.67\mathrm{x}{10}^{-23}$g

3. $1.67\mathrm{x}{10}^{-24}$g

4. $1.67\mathrm{x}{10}^{-25}$g

Q.

define neutron

Q. A proton is identical to:

1. The nucleus of helium
2. The nucleus of a hydrogen atom
3. A molecule of a hydrogen
4. An atom of hydrogen