Home
Class 12
CHEMISTRY
The radii of the elements from chromium ...

The radii of the elements from chromium (Z = 24) to copper (Z = 29) are very close to one another. This is due to :

A

lanthanoid contraction

B

the fact that successive addition of d-electrons screen the outer 4s electrons from the inward pull of the nucleus

C

increase in radii due to increase in n is compensated by decrease in radii due to increase in Z

D

atomic radii do not remain constant but decrease in a normal gradation.

Text Solution

Verified by Experts

The correct Answer is:
B
(b) It is the correct answer.
Promotional Banner

Topper's Solved these Questions

  • D-AND -F BLOCK ELEMENTS

    DINESH PUBLICATION|Exercise INTEGER ANSWER TYPE QUESTIONS|15 Videos

  • CYANIDES, ISOCYANIDES, NITROCOMPOUNDS AND AMINES

    DINESH PUBLICATION|Exercise Unit test - 8|20 Videos

  • ELECTROCHEMISTRY

    DINESH PUBLICATION|Exercise ADDITIONAL NUMERICAL PROBLEMS FOR PRACTICE|12 Videos

Similar Questions

Explore conceptually related problems

The electronic configuration of chromium (Z=24) is:

Explain the following observation: (i) Generally there is an increase in density of elements from titanium (Z=22) to copper (Z=29) in the first series of transition elements. (ii) Transition elements and their compounds are generally found to be catalysts in chemical reactions.

Explain the following observation about the transition elements. (i) There is in general an increase in density of the element from titanium (Z=22) to copper (Z=29). (ii) There occurs much more frequent metal-metal bonding in compounds of heavy transition elements (3d series )

When two genes are situated very close to one another at a chromosome