Question

_______ are different forms of a single element. A. Isotopes B. Elements C. Atoms D. Ions

Answer 1

Hello Mate!

A things which is only different form of element.

Ions are the charged pieces formed when atom loses or gains electrons so Ions are at atomic level. So option (d) is ❎.

Atoms in cases of noble gases are may be in 1 number but they may not occur same in all condition so option (c) is ❎.

Isotopes, they are the element which may be formed of those specific atoms which aren't perfectly identical and atleast differ in masses.

So till where I think option (a) is ✔.

Have great future ahead!

Answer 2

Here is your answer

A-Isotopes is correct

Note:-

isotope :-Isotope, one of two or more species of atoms of a chemical element with the same atomic number but different atomic mass.

Hope it helps you