Question

Differences between halogens and group o elments.

Answer 1

Answer:

Group 0 elemeny in their outermost shell has 8 electrons. Hence it is an OCTET. They rarely take part in a chemical reaction becoz they have complete Octet.

Halogens in their outermost shell has 7 electrons. Hence it does not form an OCTET. They take part in a chemical reaction to complete their Octet.

Answer 2

Elements in the same group in the periodic table have similar chemical properties. This is because

their atoms have the same number of electrons in the highest occupied energy level. Group 1 elements are reactive metals called the alkali metals. Group 0 elements are unreactive non-metals called the noble gas.