Answer:
The electric charge of the atom 'a' will be "+1".
Explanation:
When an atom gains/loses an electron, the atom becomes charged, and is called an ion. Gaining an electron results in a negative charge, so the atom is an anion. Losing an electron results in a positive charge, so atom ion is a cation.
It means that the 'Atom A' is giving that is, losing the electrons
