MCQ
An element having the electronic configuration $\left[ {Ar} \right]3{d^2}4{s^2}$ belongs to
  • A
    $s - $ block elements
  • B
    $p -$ block elements
  • $d -$ block elements
  • D
    $f - $ block elements

Answer

Correct option: C.
$d -$ block elements
c
(c) $d-$ block elements as last electron enters in $d-$ orbital.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Which is not possible
In which of the following molecules all the effects namely inductive, mesomeric and hyperconjugation operate ?
Select the $INCORRECT$ statement regarding following reaction is :

$Xe{F_6}\,\xrightarrow{{excess\,\,{H_2}O}}\,'X'\, + \,HF$

$Xe{F_6}\,\xrightarrow{{2\,moles\,{H_2}O}}\,'Y'\, + \,HF$

Which of the following sets of orbitals may degenerate
In the following reaction $C{r_2}O_7^ - + 14{H^ + } + 6{I^ - } \to \,$$2C{r^{3 + }} + 3{H_2}O + 3{I_2}$ Which element is reduced
$\begin{array}{*{20}{c}}
  {\begin{array}{*{20}{c}}
  {CH = O\,\,\,\,\,\,\,\,\,\,} \\ 
  {|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} 
\end{array}} \\ 
  {{{(CH - OH)}_4}} \\ 
  {\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {C{H_2} - OH} 
\end{array}$ $\xrightarrow{{B{r_2}/{H_2}O}}P$ ; $P$ is
$16.25\, g$ metal chloride is obtained on complete conversion of $8\,g$ metal oxide into metal chloride then what will be the equivalent weight of metal
A solution is prepared by dissolving a $2.5\, g$ sample of an unknown compound in $34\, g$ of benzene, $C_6H_6,$ boils at $1.38\,^oC$ higher than pure benzene. Which expression gives the molar mass of the unknown compound ? $K_b$   $C_6H_6$  $2.53\,^oC\, m^{-1}$
Which do the following vitamins has isoprene units in its structure
$IP$  of  $Be$  is higher than

$(a)\,\,B\,\,\,\,\,\,\,\,\,\,(b)\,\,Mg\,\,\,\,\,\,\,\,\,\,\,\,(c)\,\,Li\,\,\,\,\,\,\,\,\,\,\,\,(d)\,\,Al\,\,\,\,\,\,\,\,\,\,\,(e)\,\,K$