Which of the following transition metals can exhibit the highest oxidation state?

The third ionization enthalpy is minimum for

Match the following metal ions with their respective colours:

Metal ion	Colour
$A. V^{4+}$	$I. Colourless$
$B. Ti^{3+}$	$II. Purple$
$C. Ti^{4+}$	$III. Green$
$D. Ni^{2+}$	$IV. Blue$
	$V. Yellow$

The electronic configuration $4d^3$ $5s^2$ belongs to which group in the periodic table?

Match the column-$I$ with column-$II$.

column-$I$ $(\text{Property})$	column-$II$ $(\text{Metal})$
$i$. An element which can show $+8$ oxidation state	$a$. $Mn$
$ii$. $3d$ series element that can show upto $+7$ oxidation state	$b$. $Cr$
$iii$. $3d$ series element with highest melting point	$c$. $Os$

Assertion $(A)$: Transition elements have higher enthalpies of atomization.
Reason $(R)$: Large number of unpaired electrons present in transition elements facilitate strong interatomic interaction and strong bonding between atoms.