Electronic Configuration of Actinides

Q. Consider the following statements.
(I) Element with atomic number $43$ belongs to $d-$block.
(II) ${}_{64}Gd$ is present in group $3$.
(III) Se has two unpaired electrons in p-subshell.
The correct statement(s) is/are

1. Only (III)
2. Only (I) and (II)
3. Only (I) and (III)
4. (I), (II) and (III)

Q.

Elements after atomic number 92 are called

1. Lanthanoids

2. Actinoids

3. Inner transition elements

4. Transuranium elements

Q.

Which of the following is not an actinoid?

1. Am

2. Cm

3. Fm

4. Tm

Q. The electronic configuration of actinides cannot be assigned with a degree of certainty because of:

1. The small energy difference between $5f$ and $6d$ orbitals
2. Overlapping of inner orbitals
3. None of above
4. Free movement of electrons over all the orbitals

Q.

Question 22

Amongst the following elements whose electronic configuration are given below, the one having the highest ionisation enthaply is

(a)$\left[Ne\right]3s^{2}3p^1$

(b) $\left[Ne\right]3s^{2}3p^3$

(c) $\left[Ne\right]3s^{2}3p^2$

(d) $\left[Ar\right]3d^{10}4s^{2}4p^3$

Q.

Which of the following ins not an actionid?
(a) Curium (Z= 96)
(b) Californium (Z= 98)
(c) Uranium (Z = 92)
(d) Terbium (Z = 65)

Q. Which of the following is a solution?

1. Soap solution
2. Salt solution
3. chalk water mixture
4. Starch solution

Q. The chemical similarity between boron and silicon mainly due to equal value of their:

1. electronegativity
2. charge to (ionic radius)${}^2$ ratio
3. nuclear charge
4. atomic volume

Q. In the following electronic configuration $n{s}^2(n-1)d^{0-1}(n-2)f^{1-14}$. If value of $(n-1)=6$ the configuration will be of:

1. lanthanides
2. d - block
3. actinides
4. s - block

Q. In the general electronic configuration,
$(n-2)f^{1-14}(n-1)d^{01}n{s}^2$ (where n = 7) the configuration will be of:

1. lanthenides
2. actinides
3. transition elements
4. none