MCQ
Correct configuration of $F{e^{ + 3}}$ $[26] $ is
- ✓$1{s^2},2{s^2}2{p^6},3{s^2}3{p^6}3{d^5}$
- B$1{s^2},2{s^2}s{p^6},3{s^2}3{p^6}3{d^3},4{s^2}$
- C$1{s^2},2{s^2}2{p^6},3{s^2}3{p^6}3{d^6},4{s^2}$
- D$1{s^2},2{s^2}2{p^6},3{s^2}3{p^6}3{d^5},4{s^1}$
✓
Answer
Correct option: A.
$1{s^2},2{s^2}2{p^6},3{s^2}3{p^6}3{d^5}$
a
It’s Obvious
It’s Obvious
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Two $5$ molal solutions are prepared by dissolving a non-electrolyte, non-volatile solute separately in the solvents $X$ and $Y$. The molecular weights of the solvents are $M_X$ and $M_Y$, respectively where $M_X\, = \frac{3}{4} M_Y$. The relative lowering of vapour pressure of the solution in $X$ is $''m''$ times that of the solution in $Y$. Given that the number of moles of solute is very small in comparison to that of solvent, the value of $''m''$ is
→$\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,C{H_3}\,\,} \\
|\,\,\,
\end{array}\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - O - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,C{H_3}\,\,\,\,}
\end{array}$ $\xrightarrow[{(cold)}]{{HI}}$ Product is
→{\begin{array}{*{20}{c}}
{\,\,\,\,\,\,\,\,C{H_3}\,\,} \\
|\,\,\,
\end{array}\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - O - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,C{H_3}\,\,\,\,}
\end{array}$ $\xrightarrow[{(cold)}]{{HI}}$ Product is
Which one of the following compounds does not form an ozonide
Which of the following order is correct for the property mentioned in brackets ?
Which of the following is an anaesthetic
From the ground state electronic configuration of the elements given below, pick up the one with highest value of second ionisation energy.
The chirality of the compound
The secondary structure of protein is stabilised by:
Which occurs in nature in free state
Incorrect method of preparation for alcohols from the following is: