MCQ
Iron carbonyl, $Fe(CO)_5$ is
- Atetranuclear
- Bmononuclear
- Ctrinuclear
- Ddinuclear
✓
Answer
$\mathrm{Fe}(\mathrm{CO})_{5}$
$\mathrm{EAN}=\mathrm{Z}-\mathrm{O} \cdot \mathrm{N} \cdot+2(\mathrm{C} \cdot \mathrm{N} \cdot)$
$=26-0+2(5)$
$=26+10$
$=36$
only one central metal atom/lon is present and it follows $EAN$ rule, so it is mononuclear
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
Assertion : Nitration of aniline can be conveniently done by protecting the amino group by acetylation.
Reason : Acetylation increases the electrondensity in the benzene ring
Reason : Acetylation increases the electrondensity in the benzene ring
$0.2\,molal$ aqueous solution of an electrolyte $A_3B$ is $90\%$ ionised. The boiling point of the solution at $1\,atm$ is ........ $K.$ ( $K_b$ for $H_2O = 0.52\, K\, Kg\, mol^{-1}$ and $B.pt.$ of $H_2O = 373\, Kelvin$ )
→The correct order of increasing order of oxidising power is
The maximum number of electrons in an atom with $l = 2$ and $n = 3$ is
→The electronic configuration of cobalt is
In this reaction ${C_6}{H_5}N{H_2} + HCl + NaN{O_2} \to X$. Product $X$ is
→Assertion : Benzene removes a butter stain from a table cloth.
Reason : Butter has an affinity towards benzene.
Among the following, reaction($s$) which gives(give) tert-butyl benzene as the major product is(are)
→The standard enthalpy of formation of $NH_3$ is $- 46.0 \,kJ\, mol^{-1}.$ If the enthalpy of formation of $H_2$ from its atoms is $- 436\, kJ\, mol^{-1}$ and that of $N_2$ is $- 712 \,kJ\, mol^{-1},$ the average bond enthalpy of $N - H $ bond in $NH_3$ is ................ $\mathrm{kJ\,mol}^{-1}$
→$8\,g$ of $NaOH$ is dissolved in $18\,g$ of $H_2O.$ Mole fraction of $NaOH$ in solution and molality (in $mol\,kg^{-1}$ ) of the solution respectively are
→