Home
Class 12
CHEMISTRY
Assertion : Magnetic moment values of ac...

Assertion : Magnetic moment values of actinides are lesser than the theoretically predicted values.
Reason : Actinide elements are strongly paramagnetic.

A

Assertion is correct, reason is correct, reason is a correct
explanation for assertion.

B

Assertion is correct, reason is correct, reason is not a correct explanation for assertion

C

Assertion is correct, reason is incorrect

D

Assertion is incorrect, reason is correct.

Text Solution

Verified by Experts

The correct Answer is:
B
The magneticmoments are lesser than the fact that 5f electrons of actinides are less effectively shielded which results in quenchingoforbitalcontribution.
Promotional Banner

Similar Questions

Explore conceptually related problems

Why B-X bond distance in BX_(3) is shorter than theoretically expected value ?

The spin only magnetic moment value of Cr(CO)_(6) is

Assertion : Only those nuclei which are heavier than lead are radioactive. Reason : Nuclei of elements heavier than lead are unstable.

Assertion : Magnetic moment of Mn^(2+) is less than Cr^(2+) Reason: Higher the atomic number smaller is the magnetic moment.

Assertion : Magnetic moment of Dy is the highest among langthanoids. Reason : Orbital motion contributes magnetic moment.

Assertion : The value of dynamic friction is less than the limiting friction. Reason : Once the motion has started, the inertia of rest has been overcome.

Substances which are magnetic but having less magnetic moment than theoretically calculated value are called

Assertion: Paramagnetic substances get weakly attracted to a magnet. Reason: They have tedency to from a region of strong magNetic field to weak magnetic Held.

Assertion : Resistance of an ammeter is less than the resistance of a milliammeter. Reason : Value of shunt required in case of ammeter is more than a milliammeter.