Question

Any one plzzzz solve it​

Answer 1

11. isotopes since the atomic number is same

12. isotopes

13. radioactive isotopes

Answer 2

11. It is an isotope of Sodium.

12. This is an isotope of nitrogen.

Isotope is an atoms of same

elements having same number of

protons. Isotopes have different

mass number however they have

same atomic number.

13 Radioactive isotope, also called

radioisotope, radionuclide, or

radioactive nuclide, any of several

species of the same chemical

element with different masses

whose nuclei are unstable and

dissipate excess energy by

spontaneously emitting radiation in

the form of alpha, beta, and gamma

rays

Hope you understand