General Introduction of Actinoids

In $\mathrm{f}$-block elements, $\_\_\_$orbitals are progressively filled by the electrons

Gadolinium (atomic number $64$) is a member of $4\mathrm{f}$ series. Its electronic configural in $+3$ oxidation state is $\left[\mathrm{Xe}\right]4{\mathrm{f}}^7.$ What is the ground state electronic configuration of Gadolinium$\_\_\_\_\_\_\_\_\_\_\_$

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

What are trans-uranic elements? Write their names.

What are actinoids?

Explain the position of actinoid.

Define transuranic elements.

The observed electronic configuration of Protactinium (Atomic number $=91$ ) is_______. $\left[\mathrm{Rn}\right]5{\mathrm{f}}^{\mathrm{x}}6{\mathrm{d}}^{\mathrm{y}}7{\mathrm{s}}^{\mathrm{z}}$
The value of $(x+y+z)$ is _______.

Identify the correct electronic configuration of Einsteinium is

If the highest oxidation states shown by any Lanthanoid and any Actinoid are +X and +Y, the sum of X+Y is equal to?

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

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

Which of the following belongs to the actinides series?

Which one of the following acts as an oxidizing agent ?

Transuranic elements begins with