Home
Class 11
CHEMISTRY
One among the following is the incrorrec...

One among the following is the incrorrect order of increasing ionisation energy :

A

`Cl^(-) lt Ar lt K^(+)`

B

`Au lt Ag lt Cu`

C

`Cs lt Rb lt K`

D

`K lt Ca lt Sc`

Text Solution

Verified by Experts

The correct Answer is:
B
In the Cu group, the ionization energy of Ag will be less than Cu because of bigger size of Ag . However from Ag to Au the 14f electrons are added which provide very poor shielding effect.
So due to high nuclear charge, the `I.E._1` of Au is more than Ag.
`I.E._1 = Au gt Cu gt Ag`
Promotional Banner

Similar Questions

Explore conceptually related problems

Which of the following represent the correct order of increasing first ionisation enthalpy for Ca,Ba,S,Se and Ar

Which of the following represents the correct order of increasing first ionisation enthalpy for Ca,Ba,Se , and Ar ?

Which of the following is the correct order of ionisation energy?

What is the correct order of 2^(nd) ionisation energy

What is the correct order of 2^(nd) ionisation energy ?

Which is the correct increasing order of ionisation energy ?

Which one of the following is correct order of increase of size?