Question

The nuclides ${}_{18}^{40}Ar$ and ${}_{19}^{41}K$ are :

• A. isotopes
• B. isobars
• C. isotones
• D. none of these

Answer 1

The correct option is C isotones

The two or more species of atoms or nuclei that have the same number of neutrons are called as isotones.

The nuclides ${}_{18}^{40}Ar$ and ${}_{19}^{41}K$ are isotones. Because they have the same number of neutron.

So, the correct option is $C$