MCQ
What is the net charge on ferrous ion
- ✓$+2$
- B$+3$
- C$+4$
- D$+5$
✓
Answer
Correct option: A.
$+2$
(a) $_{26}Fe\xrightarrow{{}}[Ar]\,3{{d}^{6}}4{{s}^{2}}$
$F{{e}^{++}}\xrightarrow{{}}\,[Ar]\,3{{d}^{6}}\,4{{s}^{0}}$
$F{{e}^{+++}}\xrightarrow{{}}\,[Ar]\,3{{d}^{5}}4{{s}^{0}}$
In $ +2 $ state $Fe$ is called Ferrous & in $+3$ state as ferric.
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
The product $(A)$ of given oxymercuration demercuration is
→By studying the elevation in boiling point of aqueous solution of glucose the value of $K_b$ for water is found to be $0.51\,K\,kg\,mol^{-1}$ . The value of $K_b$ can be expected from the aqueous solution of $K_4[Fe(CN)_6]$ is
→Activation energy is
From the given list, the number of compounds with $+4$ oxidation state of Sulphur__________.
→$\mathrm{SO}_3, \mathrm{H}_2 \mathrm{SO}_3, \mathrm{SOCl}_2, \mathrm{SF}_4, \mathrm{BaSO}_4, \mathrm{H}_2 \mathrm{~S}_2 \mathrm{O}_7$
The size of nucleus is measured in
Which among the following species does not have angular shape?
→$I.$ $ICI_2^+$ $II.$ $NH_2^-$
$III.$ $CS_2$ $IV.$ $H_2Se$
Carbon atoms in the compound ${(CN)_4}{C_2}$ are
→Which of the following reacts with haemoglobin in the blood to form carboxyhaemoglobin
$ A _{( g )} \rightleftharpoons B _{( g )}+\frac{ C }{2}(g)$ The correct relationship between $K_P, \alpha$ and equilibrium pressure $P$ is
→The unit of equivalent conductivity is