MCQ
Identify the element for which electronic configuration in $+3$ oxidation state is $[\mathrm{Ar}] 3 \mathrm{~d}^{5}$ :
- A$\mathrm{Ru}$
- B$Mn$
- C$Co$
- ✓$\mathrm{Fe}$
✓
Answer
Correct option: D.
$\mathrm{Fe}$
d
$\mathrm{Fe}^{3+}[\mathrm{Ar}] 3 \mathrm{~d}^{5}$
$\mathrm{Fe}^{3+}[\mathrm{Ar}] 3 \mathrm{~d}^{5}$
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
Maltose on treatment with dilute $HCl$ gives
→Osmotic pressure of $0.1\,M $ solution of $NaCl$ and $N{a_2}S{O_4}$ will be
→The correct order of energy of absorption for the following metal complexes is
→$A: \left[ Ni ( en )_{3}\right]^{2+}, B :\left[ Ni \left( NH _{3}\right)_{6}\right]^{2+}, C :\left[ Ni \left( H _{2} O \right)_{6}\right]^{2+}$
Nitrobenzene on reduction by zinc and $N{H_4}Cl$ gives
→Based on equation $E = - 2.178 \times 10^{-18} \ J \ \left( {\frac{{{Z^2}}}{{{n^2}}}} \right)$ certain conclusions are written. Which of themis not correct?
→Shape of ${O_2}{F_2}$ is similar to that of
→The halogen that most easily reduced is
The maximum valency of an element with atomic number $7$ is
→In Lassaigne's extract of an organic compound, both nitrogen and sulphur are present, which gives blood red colour with $Fe ^{3+}$ due to the formation of-
→Major product of the given reaction is
