Question

The nuclei ${}_{13}A{l}^{27}$ and ${}_{14}S{i}^{28}$ are example of

• A. Isotopes
• B. Isobars
• C. Isotones
• D. Isomers

Answer 1

The correct option is C Isotones

Isotopes are those nuclei having same number of protons. Isobars are those nuclei those having same mass number and Isotones are those having nuclei having same number of neutrons. Isomer means those compounds having same molecular formula but different structure.

Here both nuclei having same number of neutrons i.e 14.

So, they are isotones.