<u>Answer:</u> The ion charge formed by Group I will be +1, by Group VI will be -2 and by Group III will be +3.
<u>Explanation:</u>
Ions are formed when electrons are lost or gained by an atom. When an atom looses electrons, it forms a positive ion known as cations and when an atom gains electrons, it forms a negative ion known as anions.
The electronic configuration of the elements present in
- <u>Group I:</u>
where n is the number of period
This configuration will loose 1 electron and thus will form an ion of +1.
- <u>Group VI:</u>
where n is the number of period
This configuration will gain 2 electrons and thus will form an ion of -2.
- <u>Group III:</u>
where n is the number of period
This configuration will loose 3 electrons and thus will form an ion of +3.
Hence, the ion charge formed by Group I will be +1, by Group VI will be -2 and by Group III will be +3.