Question

Which of the following can change to an anion? a) Iodine b) Magnesium c) Calcium d) Xenon​

Answer 1

The Correct answer is Option (A) Iodine

Among the given elements, the element that can change to an anion is iodine.

Explanation:

• Metals have loosely bound electrons.
• They can lose one or more electrons to change into positive ions called cations.

• On the other hand, non-metals need electrons to complete their octet.

• They accept electrons and change to negatively charged ions called anions.

• Among the given elements, xenon is an inert element. It has a complete octet and is stable.

• Magnesium and calcium are metals, therefore, they lose electrons and change into cations.

Answer 2

The correct answer will be option a, Iodine.

• Anion is an ion that has a negative charge on it, which means having an extra electron.

• Magnesium and calcium are the members of 2nd group also known as alkaline earth metals.

      The alkaline earth metals have a tendency to lose electrons in order to

      achieve stable electronic formation. They do not form anion at all.

• Xenon belongs to noble metals. They have a very stable electronic configuration. They neither gain electrons nor lose electrons.

• Iodine belongs to the halogen group. It needs one electron to achieve a stable configuration. So, it gains 1 electron and forms anion readily.