What is the difference between the ground state and excited state for an atom

The ground state describes the lowest possible energy that an atom can have.

Explanation:

An excited state is an energy level of an atom, ion, or molecule in which an electron is at a higher energy level than its ground state.

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).