S + O = SO4. cracked also chemical reaction
<u>Answer:</u> The correct answer is option B. electron.
<u>Explanation:</u>
There are 3 subatomic particles:
- Electrons: They carry negative charge and are present in orbits around the nucleus of an atom.
- Protons: They carry positive charge and are present inside the nucleus of an atom
- Neutrons: They does not carry any charge and are present inside the nucleus of an atom.
An atom forms an ion, when it looses or gains an electron.
- When an atom looses electron, it form a positive ion known as cation.
- When an atom gains electron, it form a negative ion known as anion.
Hence, the correct answer is option B. electron.
