Home
Class 12
CHEMISTRY
Statement 1 : Energy gap between 4f, 5d ...

Statement 1 : Energy gap between 4f, 5d and 6s subshells is small whereas that between 5f, 6d and 7s subshells is large.
Statement 2 : Langhanoides show a limited number of oxidation state whereas actinoids show a large number of oxiation states.

A

Statememt 1 is true, statement 2 is true , statement 2 is a correct explanation for statement 3

B

Statement 1 is true, statement 2 is true , statement 2 si not a correct explanation for statement 3

C

Statement 1 is true, statement 2 is false

D

Statement 1 is false, statement 2 is ture

Text Solution

Verified by Experts

The correct Answer is:
D
Statement - 1 is false because energy gap between 4f, 5d and 6s is large whereas that between 5f, 6d and 7s is small.
Promotional Banner

Topper's Solved these Questions

  • D & P-BLOCK ELEMENTS

    ERRORLESS |Exercise JEE Section (Comprehension type questions)|3 Videos

  • D & P-BLOCK ELEMENTS

    ERRORLESS |Exercise JEE Section (Integer type questions)|6 Videos

  • D & P-BLOCK ELEMENTS

    ERRORLESS |Exercise JEE Section (More than one choice correct answer)|24 Videos

  • COORDINATION CHEMISTRY

    ERRORLESS |Exercise JEE(ADVANCED 2018 MORE THAN ONE CHOICE CORRECT ANSWER|1 Videos

  • ELECTROCHEMISTRY

    ERRORLESS |Exercise Jee Section JEE (Advanced) 2018 (Numberic answer Type Questions)|2 Videos

Similar Questions

Explore conceptually related problems

Fluorine exhibits only -1 oxidation state whereas other halogens show +1, +3, +5 and +7 oxidation states also. Explain.

Assertion: Manganese shows a number of oxidation states. Reason: The difference of energy between 3d and 4s subshells is large.

STATEMENT-1 : Lanthanoids show less oxidation states than actinoids and STATEMENT-2: 4f subshell is dieperseated than 5f .

Assertion : Manganese show a maximum oxidation state of + 5 . Reason : Manganese has 5 electrons in the 3d subshell.

Lanthanoids and actinoids are f-block elements in which the last electron enters the anti-penultimate energy level. The most common oxidation state of lanthanoids is +3, though +2 and +4 oxidation states are exhibited by some of the elements. In lanthanoid series, there is a progressive decrease in atomic and ionic radii, known as lanthanoid contraction. Unlike lanthanoids, actinoids show a large number of oxidation states. Name an element of lanthanoid series, which is known to show +4 oxidation state. Is it a strong oxidising agent or reducing agent?

Lanthanoids and actinoids are f-block elements in which the last electron enters the anti-penultimate energy level. The most common oxidation state of lanthanoids is +3, though +2 and +4 oxidation states are exhibited by some of the elements. In lanthanoid series, there is a progressive decrease in atomic and ionic radii, known as lanthanoid contraction. Unlike lanthanoids, actinoids show a large number of oxidation states. Name two lanthanoids which exhibit +2 oxidation state.