Physical and Chemical Properties of Actinoids

Describe the Ionization Energies of Actinoids.

Curium is the most reactive actinoid.

Name the most reactive actinoid.

Identify the most reactive actinoid.

${\mathrm{U}}^{3+}$ is a diamagnetic trivalent actinoid ion.

Identify the paramagnetic ion(s) from the given trivalent actinoids.

Identify the diamagnetic ion from the given trivalent actinoids.

Discuss the magnetic nature of the trivalent actinoids.

The colour is due to electronic transition within the $5\mathrm{f}$ levels.

${\mathrm{Pu}}^{3+}$ shows pink colour.

${\mathrm{U}}^{3+}$ shows red colour.

Describe the colours of actinide cations.

Transuranic elements are elements with atomic no. greater than _____. Americium($\mathrm{Am}$) is an example of a transuranic element.

Which of the following actinoids show oxidation states upto $+7$?

Actinides ($*\mathrm{Ac}$) generally having more number of oxidation state as compared to lanthanoids ($*\mathrm{La}$), because

The highest possible oxidation state of plutonium is _______.

If radium and chlorine combine to form radium chloride, the compound would be

Most of the radioactive elements are in

The Radioactive element which was discovered by Madam Curie and the name of which is based on her country is

True and False

I. $\mathrm{C}{\mathrm{e}}^{+4}$ is an oxidizing agent & colourless.

II. $\mathrm{L}{\mathrm{u}}^{3+}$ is colourless.

III. Actinoids exhibit higher number of oxidation states than lanthanoid

IV. All $3$d elements give ${\mathrm{H}}_2$ with $1$M HCl