f-Block Elements- Properties & Uses Past Year (2019 onward - NTA Papers) MCQs The d and f Block Elements Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

Given below are two statements:

Assertion (A):	Ionisation enthalpies of early actinoids are lower than for early lanthanoids.
Reason (R):	Electrons are entering 5f orbitals in actinoids which experience greater shielding from nuclear charge.

1.	Both (A) and (R) are True and (R) is the correct explanation of (A).
2.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
3.	(A) is True but (R) is False.
4.	(A) is False but (R) is True.

Subtopic: f-Block Elements- Properties & Uses |

From NCERT

NEET - 2023

Please attempt this question first.

Hints

Please attempt this question first.

Gadolinium has a low value of third ionisation enthalpy because of:

1.	high basic character	2.	small size
3.	high exchange enthalpy	4.	high electronegativity

Subtopic: f-Block Elements- Properties & Uses |

68%

From NCERT

NEET - 2022

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh

Hints

To view explanation, please take trial in the course.

NEET 2023 - Target Batch - Aryan Raj Singh