wiz-icon
MyQuestionIcon
MyQuestionIcon
2
You visited us 2 times! Enjoying our articles? Unlock Full Access!
Question

Statement I: Lithium needs less energy to knock off an electron from its outermost orbit than Helium.
Statement II: Lithium has 1 electron in its outermost orbit which is loosely bound due to the repulsion of the inner orbit electrons and hence, less attraction from the nucleus.


A

Statement I is true. Statement II is true. Statement II is the correct explanation of statement I.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B

Statement I is true. Statement II is true. Statement II is not the correct explanation of statement I.

No worries! We‘ve got your back. Try BYJU‘S free classes today!
C

Statement I is true. Statement II is false.

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

Statement I is false. Statement II is false.

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A

Statement I is true. Statement II is true. Statement II is the correct explanation of statement I.


In Lithium, 2 electrons are in the first orbit and the remaining electron is in the second orbit. This electron experiences less attraction from the nucleus due to the increased distance of the orbit. Also, the electrons in the first orbit repel the 3rd electron which further reduces the net effective force on the outermost electron.
Hence, it is easy to knock off the outermost electron in Lithium when compared to Helium.


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Physical Properties
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon