Down the group, the stability of the higher valency decreases. Explain.

Open in App

Solution

Down the group the stability of the higher valency decreases due to the inert pair effect.
Inert pair effect is the reluctance of the valence $8 - e^{-} s$ of the atom with high atomic no. to take part in a chemical reaction.

Suggest Corrections

Similar questions

Q. Assertion :Acidic character of group 16 hydrides increases from

H_{2} O

H_{2} T e

. Reason: Thermal stability of hydrides decreases down the group.

Q. Give reason in group

16

, the stability of +6 oxidation state decreases and that of

+ 4

oxidation state increases down the group.

Q. The valencies of p block elements are equal to group number or 8 minus the group number. Therefore they show one lower valency and one higher valency. However, if we go to the bottom elements of any group, the compounds with lower valency are predominant whereas higher valency becomes rather uncommon. Explain.

Q. Question 48(e)
(a) Electropositive nature of the element(s) increases down the group and decreases across the period
(b) Electronegativity of the element decreases down the group and increases across the period
(c) Atomic size increases down the group and decreases across a period (left to right)
(d) Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9.

Name the element which shows maximum valency.

(i) Electropositive nature of the element(s) increases down the group and decreases across the period
(ii) Electronegativity of the element decreases down the group and increases across the period
(iii) Atomic size increases down the group and decreases across a period (left to right)
(iv) Metallic character increases down the group and decreases across a period.
On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9.

Name the element which shows maximum valency.

Join BYJU'S Learning Program

Down the group, the stability of the higher valency decreases. Explain.

Down the group the stability of the higher valency decreases due to the inert pair effect.Inert pair effect is the reluctance of the valence 8−e−s of the atom with high atomic no. to take part in a chemical reaction.

Down the group the stability of the higher valency decreases due to the inert pair effect.
Inert pair effect is the reluctance of the valence $8 - e^{-} s$ of the atom with high atomic no. to take part in a chemical reaction.