wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Why is there a gradual decrease in the ionization energy from He to Li?

94315.jpg

A
Completely filled shell of Li
loader
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
In Li, electron is added to new shell
loader
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
Half filled shell of Li
loader
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
In Li, electron is added to p-orbital
loader
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B In Li, electron is added to new shell
The electronic configuration of He is 1s2. The electronic configuration of Li is 1s22s1. As one more electron is added to a new shell in case of Li, it can be removed easily. Hence, there is a gradual decrease in the ionization energy from He to Li.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Molecular Orbital Theory
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon
footer-image