Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • Statement I: The ionisation enthalpies of lanthanoids are less than that of actinoid Statement II: 5f orbitals are less attracted towards the nucleus than 4f-orbitals.  <d

Statement I: The ionisation enthalpies of lanthanoids are less than that of actinoid
Statement II: 5f orbitals are less attracted towards the nucleus than 4f-orbitals.

 

Option: 1

Both the statements are correct.


Option: 2

Both the statements are incorrect.


Option: 3

Statement I is correct and statement II is incorrect.


Option: 4

Statement II is correct and Statement I is incorrect.


Answers (1)

best_answer

The ionisation enthalpies of actinoids are less than that of lanthanoids because of the loosely bound 5f orbitals. In case of lanthanoids the 4f orbitals are deeply buried inside the atom, so it is difficult to pull out an electron from 4f orbitals than 5f orbitals.

Posted by

Ritika Kankaria

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Latest Question