The number of d electrons in F e^ + 2 (atomic number of Fe = 26) … - Vidyadip

MCQ

The number of $d$ electrons in $F{e^{ + 2}}$ (atomic number of $Fe = 26$) is not equal to that of the

A
$p$-electrons in $Ne$ (At. No.$= 10$)
B
$s$-electrons in $Mg$ (At. No.$= 12$)
C
$d$-electrons in $Fe$
✓
$p$-electrons in $C{l^ - }$ (At. No. of $Cl$ $= 17$)

✓

Answer

Correct option: D.

$p$-electrons in $C{l^ - }$ (At. No. of $Cl$ $= 17$)

d
(d) $_{26}Fe = [Ar]\,3{d^6},\,4{s^2}$

$F{e^{2 + }} = [Ar]\,3{d^6},\,4{s^0}$

Number of $d-$ electrons $= 6$

$_{17}Cl = [Ne]\,3{s^2},\,3{p^5}$

$C{l^ - } = [Ne]\,3{s^2},\,3{p^6}$

Number of $p-$ electrons $= 6.$

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 2. structure of atom→2. structure of atom — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Order of basic strength $\mathop {Ph - N{H_2},}\limits_{(A)} \,\,\mathop {Ph - NH - Me,}\limits_{(B)} \,\,\mathop {\begin{array}{*{20}{c}}
{Ph - N - Me}\\
|\\
{Me}
\end{array}}\limits_{(C)} $

Self protective metal among the following is:

The enthalpy change for the reaction, $H_2(g) + C_2H_4(g) \to C_2H_6(g)$ is ......$kcal\, mol^{-1}$ The bond energies are, $[e_{H -H}= 103, e_{C-H} = 99, e_{C -C} = 80]$ and $[e_{C = C} = 145\, kcal\, mol^{-1}]$

Which is the correct order of stability of the following three carbonium ions ?

$(I)$ $C{H_2} = CH\mathop C\limits^ + HC{H_3}$

$\begin{array}{*{20}{c}} {{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{H_3}} \\ {\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,} \\ {(II)\,\,\,\,\,\,\,\,\,\,C{H_2} = C - \mathop {{\text{ }}C}\limits^ + {H_2}} \end{array}$

$(III)$ $C{H_3}CH = CH\mathop C\limits^ + {H_2}$

The alkene that will give the same product with $HBr$ in the absence as well as in the presence of peroxide is

The major product of the following reaction

Carbocation which is most stable

Which of the following reaction can be used to define the heat of formation of $C{O_2}(g)$

The $pH$of a solution is the negative logarithm to the base $10$ of its hydrogen ion concentration in

According to heisenberg uncertainty principle