Question

When an electron is added in valence shell then​

Answer 1

When an electron is added in valence shell then​ it turns into a negative ion.

Explanation:

• All atoms have the same number of electrons, neutrons and protons.
• But to complete the valence shells, an atom tends to take up or lose electrons.
• Electron affinity is the amount of energy that is released from any atom when an electrons joins its valence shell to complete the orbital.
• When electrons are added, the atom turns into a negative ion due to the presence of extra negative charge.