defence exam SSB Head Constable (Communication) 2023 Mock Test General Science Chemistry Radioactivity
When a nucleus emits a Beta particle, what happens to its atomic number and mass number?
1
Atomic number Increased by 2 and mass number increased by 2.
2
Atomic number Increased by 1 and mass number remains the same.
3
Atomic number decreased by 2 and mass number increased by 4.
4
Atomic number decreased by 2 and mass number decreased by 4.