Question

which of the two will be chemically more reactive , sulphur (s) with atomic number 16 or chlorine (16) with atomic number 17 ​

Answer 1

Explanation:

Chlorine is more reactive since it has only one electron in its outermost shell which it can lose to gain stability.

Answer 2

Chlorine (17) will be chemically more reactive.

• In the periodic table, chlorine belongs to group 17 and sulphur belongs to group 16. Hence, chlorine will have 7 valence electrons while sulphur will have 6 valence electrons.
• Chlorine requires only one electron to complete its Octet and attain configuration of noble gas Argon.
• It can easily accept one electron, compared to sulphur which needs two electrons to complete its Octet.
• Hence, chlorine is chemically more reactive than sulphur.