General Introduction of d- and f-Block Elements

Match the following:

$\begin{array}{cccc}\left(\mathrm{a}\right)& {\mathrm{Cr}}^{3+}& \left(\mathrm{i}\right)& \left[\mathrm{Ar}\right]3{\mathrm{d}}^{10}\\ \left(\mathrm{b}\right)& {\mathrm{Cu}}^{+}& \left(\mathrm{ii}\right)& \left[\mathrm{Xe}\right]4{\mathrm{f}}^4\\ \left(\mathrm{c}\right)& {\mathrm{Co}}^{2+}& \left(\mathrm{iii}\right)& \left[\mathrm{Ar}\right]3{\mathrm{d}}^5\\ \left(\mathrm{d}\right)& {\mathrm{Mn}}^{2+}& \left(\mathrm{iv}\right)& \left[\mathrm{Ar}\right]3{\mathrm{d}}^7\\ \left(\mathrm{e}\right)& {\mathrm{Pm}}^{3+}& \left(\mathrm{v}\right)& \left[\mathrm{Ar}\right]3{\mathrm{d}}^3\end{array}$

Transition metal elements exhibit general electronic configuration________

Which pair of lanthanides is used in glass, blowers, goggles ?

Which of the following group of $\mathrm{d}-$block does not contain transition element?

The position of inner transition elements is

How are $\mathrm{f}$-block elements classified?

$\mathrm{f}$-block elements are also known as 

In $\mathrm{f}$-block elements, the differentiating electron enters into 

Which of the following statement is incorrect for pair of elements $\mathrm{Zr} - \mathrm{Hf}$?

Which element doesnot belong to transition metal.

The increase in atomic number with reduction in atomic size is a general characteristic of elements of -

The true statement for an element with atomic number $46$ is :

The general electronic configuration of transition element is

The group which belongs to transition series is

The $5\mathrm{d}$ series of transition metals have more frequent metal-metal bonding in their compounds than do the $3\mathrm{d}$ and $4\mathrm{d}$ metals. Explain.

Write down electronic configuration of chromium $(\mathrm{Z}=24)$ and indicate in it.
($i$) number of sub-shells
($ii$) number of orbitals
($iii$) number of electrons in $\mathrm{M}$-shell

Write down electronic configuration of ${\mathrm{Fe}}^{3+}$ ion and answer the following:
($i$) What is the number of electrons having $n+\ell =3$ in it?
($ii$) How many electrons in it have $\mathrm{n}=3$ and $m=0 ?$
($iii$) How many electrons in it have $\ell =1$ ?
($iv$) What is the number of electrons in $\mathrm{M}$-shell?