GENERAL KNOWLEDGE

Detailed explanation-1: -Atoms with 8 electrons in their valence shell have completely filled last orbitals and are therefore the most stable, as their electronic configuration is similar to that of the closest noble gas.

Detailed explanation-2: -The octet rule refers to a crucial principle that the atoms which have bonded share eight outer electrons. This certainly implies that the atom’s valence shell contains a resemblance with noble gas. The octet rule states that the atoms prefer to have eight electrons only in their full outer shells.

Detailed explanation-3: -Since an atom is energetically satisfied when all of the electrons are paired and 2+6 = 8, an atom must have 8 electrons in its valence shell to pair all of the electrons.

Detailed explanation-4: -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. Thus, the octet rule sticks with filling of 8 electrons in the valence shell of an atom. Elements with less than 8 electrons in valence shell means less stable.

Detailed explanation-5: -Octet rule states that every atoms in order to attain stability is to be filled with “eight” electrons in it’s outermost electron shell.