The Actinoids

What is electronic configuration of Lawrencium?

The maximum oxidation state exhibited by actinide ions is

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

Define actinoid contraction.

There is a gradual decrease in the size of atoms or ${\mathrm{M}}^{3+}$ ions across the series. This may be referred to as the Lanthanoids contraction.

Ionisation enthalpies of actinoids are lower than lanthanoids.

The magnetic properties of the actinoids are more complex than those of the _____.

Actinoids exhibit larger oxidation states than lanthanides because of the very small energy gap between _____ .

Explain the magnetic properties of actinoids ?

Explain the reasons for variable oxidation state shown by actinoids ?

Explain the variable oxidation states shown by actinoids ?

The actinoid used for the manufacture of fine rods for atomic reactors is _____.

Which of the following ion is colourless?

${\mathrm{U}}^{3+}$ ,${\mathrm{Cm}}^{4+}$ , ${\mathrm{Th}}^{4+}$

Does actinoids show actinoid contraction similar to lanthanoid contraction ?

Give an explanation for the gradual decrease in size (actinoid contraction) from element to element is greater among the actinoid than that among the Lanthanoids (lanthanoid contraction).

Explain why ${\mathrm{Gd}}^{+3}$ is colourless.

Differentiate between lantanoids and actinoids.

What are actinoids?

Explain the position of actinoid.

The extent of actinoid contraction is greater than lanthanoid contraction, explain.