The Actinoids

IMPORTANT

The Actinoids: Overview

This topic covers concepts, such as The Actinoids, Properties of Actinium and Actinoids, Electronic Configuration of Actinoids, Atomic and Ionic Sizes of Actinoids, Radioactive Nature of Actinoids, and Oxidation States of Actinoids.

Important Questions on The Actinoids

EASY
IMPORTANT

The maximum oxidation state exhibited by actinide ions is

EASY
IMPORTANT

Large number of oxidation states are exhibited by the actinoids than those by the lanthanoids, the main reason being

EASY
IMPORTANT

Lanthanoids exhibits smaller number of oxidation states than actinoids because:

EASY
IMPORTANT

Actinides (*Ac) generally having more number of oxidation state as compared to lanthanoids (*La), because

MEDIUM
IMPORTANT

Which of the following kings embraced Buddhism and spread its teachings?

MEDIUM
IMPORTANT

Which of the following texts contains information about the administration of the Mauryan Empire?

MEDIUM
IMPORTANT

Which text is considered a primary source of information about the Maurya Empire?

EASY
IMPORTANT

Which of the following exhibits only +3 oxidation state?

EASY
IMPORTANT

The reason for greater range of oxidation states in actinoids is attributed to

EASY
IMPORTANT

4n+1 series is known by which name?

MEDIUM
IMPORTANT

The number of α and β particles emitted in the conversion of 90Th232 to 82Pb208 are

MEDIUM
IMPORTANT

An element of 5f-series but has no electrons filled in 5f-sub shell

EASY
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Most of the radioactive elements are in

MEDIUM
IMPORTANT

True and False

I. Ce+4 is an oxidizing agent & colourless.

II. Lu3+ is colourless.

III. Actinoids exhibit higher number of oxidation states than lanthanoid

IV. All 3d elements give H2 with 1M HCl

HARD
IMPORTANT

The main reason for larger number of oxidation states exhibited by the actinides than the corresponding lanthanides is

MEDIUM
IMPORTANT

The electronic configuration of actinoids cannot be assigned with degree of certainty because of

EASY
IMPORTANT

Which of the following belongs to the actinides series?

HARD
IMPORTANT

The actinoids exhibit more number of oxidation states in general than the lanthanoids. This is because

MEDIUM
IMPORTANT

Which one of the following acts as an oxidizing agent ?

MEDIUM
IMPORTANT

Transuranic elements begins with