MCQ
Transition element makes complex compound due to
  • presence of $d-$ orbital
  • B
    large size
  • C
    variable valency
  • D
    presence of $2e^-$

Answer

Correct option: A.
presence of $d-$ orbital
a

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

In the following sequence of the reations, what is $D$?

(image) $\xrightarrow{{[O]}}A\xrightarrow{{SOC{l_2}}}B\xrightarrow{{Na{N_3}}}C\xrightarrow{{Heat}}D$

Which of the following reactions is a halogenated exchange reaction:
The strongest acid amongst the following is
Match list $- I$ and List $- II.$

  List $-I$   List $-II$

$(a)$

$\begin{array}{*{20}{c}}
  {O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {R - C - Cl \to R - CHO} 
\end{array}$
$(i)$

$Br _{2} / NaOH$

$(b)$ $\begin{array}{*{20}{c}}
  {R - C{H_2} - COOH \to R - CH - COOH} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|} \\ 
  {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Cl} 
\end{array}$
$(ii)$ $H _{2} / Pd - BaSO _{4}$
$(c)$ $\begin{array}{*{20}{c}}
  {O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {R - C - N{H_2} \to R - N{H_2}} 
\end{array}$
$(iii)$ $Zn ( Hg ) /$ Conc. $HCl$
$(d)$ $\begin{array}{*{20}{c}}
  {O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {R - C - C{H_3} \to R - C{H_2} - C{H_3}} 
\end{array}$
$(iv)$ $Cl _{2}$ / Red $P , H _{2} O$

Choose the correct answer from the options given below:

How the isomeric complexes $[Co(NH_3)_6][Cr(NO_2)_6]$ and $[Cr(NH_3)_6][Co(NO_2)_6]$ can be distinguished from one another by
A mixture of two completely miscible non-ideal liquids which distil as such without change in its composition at a constant temperature as though it were a pure liquid. This mixture is known as
A hydrocarbon $C_5H_8$ if consumes two moles of hydrogen and oozonolysis, it produces $2-$ oxo propanal and methanal, then hydrocarbon is
A tetra-atomic molecule $(A)$ on reaction with excess oxygen produces substance $(B)$. $(B)$ is a dehydrating agent.The substances $(A)$ and $(B)$ respectively will be
Which of the following is an amorphous substance?
A sample of milk splits after $60 \;min$. at $300\; \mathrm{K}$ and after $40 \;min$. at $400 \;\mathrm{K}$ when the population of lactobacillus acidophilus in it doubles. The activation energy (in $\mathrm{kJ} / \mathrm{mol}$ ) for this process is closest to ............. $\mathrm{kJ/mole}$

(Given, $\mathrm{R}=8.3\; \mathrm{J} \mathrm{mol}^{-1} \mathrm{K}^{-1}$$, \ln \left(\frac{2}{3}\right)=0.4$ $\left.e^{-3}=4.0\right)$