Download App

4. d and f- block elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry4. d and f- block elements1 Mark
MCQ
Which of the following electronic configuration is that of a transitional element
  • A
    $1{s^2},2{s^2}{p^6},3{s^2}{p^6}{d^{10}},4{s^2}{p^6}$
  • B
    $1{s^2},2{s^2}{p^6},3{s^2}{p^6}{d^{10}},4{s^2}{p^1}$
  • ✓
    $1{s^2},2{s^2}{p^6},3{s^2}{p^6}{d^2},4{s^2}$
  • D
    $1{s^2},2{s^2}{p^6},3{s^2}{p^6},4{s^2}$
✓

Answer

Correct option: C.
$1{s^2},2{s^2}{p^6},3{s^2}{p^6}{d^2},4{s^2}$
c
(c)$1{s^2},\,2{s^2}{p^6},\,3{s^2}{p^6}{d^2},\,4{s^2}$.

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

Explore more

More "M.C.Q (1 Marks)" from 4. d and f- block elements→4. d and f- block elements — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

$STATEMENT-1$: $\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_5 \mathrm{NO}\right] \mathrm{SO}_4$ is paramagnetic. and

$STATEMENT-2$: The $\mathrm{Fe}$ in $\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_5 \mathrm{NO}_3 \mathrm{SO}_4\right.$ has three unpaired electrons.

→
$\,$
→
For the reaction ${H_2}(g) + B{r_2}(g) \to 2HBr(g)$, the experimental data suggest, rate $ = K[{H_2}]{[B{r_2}]^{1/2}}$. The molecularity and order of the reaction are respectively
→
How many primary amines can be formulated by C3​H9​N and how many 1° hydrogen are associated with carbon atoms of each compound?
→
Which is least stable
→
To deposit one gm equivalent of an element at an electrode, the quantity of electricity needed is
→
Calculate the standard cell potential (in $V$) of the cell in which following reaction takes place

$F{e^2}+ \left( {aq} \right) + A{g^ + }\left( {aq} \right) \to F{e^{3 + }}\left( {aq} \right) + Ag\left( s \right)$

Given that:
$E_{Ag^+/Ag}^o = xV$
$E_{F{e^{2 + }}/Fe}^o = yV$
$E_{F{e^{3 + }}/Fe}^o = zV$

→
What is the co-ordination number of the metal in ${\left[ {Co{{(en)}_2}C{l_2}} \right]^ + }$
→
Dimethyl ether and ethyl alcohol are
→
Identify the metal that forms colourless compounds.
→