Question

Octet rule states that elements tend to combine by losing, gaining or sharing electrons such that each atom has eight electrons in its valence shell. Why only 8 electrons?

• A. Because elements with less than 8 valence electrons are more stable.
• B. Because noble gases have 8 electrons in their valence shell.
• C. Because elements with less than 8 valence electrons are less stable.
• D. Both B and C.

Answer 1

The correct option is D Both B and C.

Since, all noble gases have 8 electrons in their valence shell and they are observed to be highly stable and inert, i.e., do not react with other elements, the octet rule sticks with filling of 8 electrons in the valence shell of an atom.