Question

Distinguish between octate and duplex​

Answer 1

Answer:

The word octet refers to the number eight, and the word duplet is related to “doublet” and refers to a pair or to the number two.

Noble gases (or inert gases) such as neon (Ne) and argon (Ar) have eight electrons in their valence (outermost) shells, which gives them a stable electronic configuration. Other atoms have a tendency to combine in order to have 8 electrons in their valence shells, and to arrive at the same electronic configuration as a noble gas. This is the octet rule.

However there are elements like lithium and hydrogen that do not reach eight electrons in their outermost valence shell. The outermost shell of helium for example is filled with only two electrons. Hydrogen and lithium become stable by acquiring the electronic configuration of the nearest inert gas, which is helium. This is the duplet (or duet) rule.

Answer 2

Answer:

Octet means presence of a total of 8 electrons in its valence shell while in case of duplet only 2 electrons are present in valence shell.