Question

In case of alkaline earth metals, the oxidation state of more than two is not observed because

• A. they have only two electrons in the outer most shell
• B. the s-orbital can accommodate only two electrons
• C. the removal of third electron involves breaking up of noble gas configuration and the energy needed for this purpose is extremely high
• D. None of these

Answer 1

Answer: (C)

Correct answer is (c) the removal of third electron involves breaking up of noble gas configuration and the energy needed for this purpose is extremely high