Question

E SELECT THE ODD ONE OUT GIVING REASON:
1. Electron, Proton, Neutron, Nucleus Compound.
2. Natrium, kalium, Ferrum, Cuprum, Calcium.
3. Nitrogen, Oxygen, Fluorine, Bromine, Ozone
4. Sodium, Potassium, Lithium, Aluminium, Rubidium
5. Fluorine, Chlorine, Bromine, lodine, Oxide​

Answer 1

Answer:

1. nucleus compound
2. calcium
3. ozone
4. rubidium
5. iodine