Which of the following has longest C–O bond length? (free in C–O bond length in CO is 1.128 A.)
$[Co(CO)_4]^{-}$
$[Fe(CO)_4]^{2-}$
$[Mn(CO)_6]^{+}$
$Ni(CO)_4$
Additional Questions
|
The number of radial nodes in 3s and 2p respectively are |
Answer |
|
Zinc can be coated on iron to produce galvanized iron but the reverse is not possible. It is because |
Answer |
|
For a sample of perfect gas when its pressure is changed isothermally from p; to pi, the entropy change is given by |
Answer |
|
The number of geometrical isomers of the complex $[Co(NO_2)_3(NH_3)_3]$ is |
Answer |
|
In the following radioactive decay, $_{92}X^{232} \rightarrow _{89}Y^{220}$, how many $\\alpha$ and $\\beta$-particles are ejected from X to Y? |
Answer |
|
A 0.0020 m aqueous solution of an ionic compound $Co[(NH_3)_5(NO_2)]Cl$ freeze at - 0.00732°C. Number of moles of ions which 1 mole of ionic compound produces on being dissolved in water will be (Ky = - 1.86°C/m) |
Answer |
|
Predict the correct intermediate and product in the following reaction: |
Answer |
|
A compound contains atoms of three elements A, B and C, If the oxidation number of A is +2, B is +5 and that of C is -2, the possible formula of the compound is |
Answer |
|
The d-electron configuration of $Cr^{2+}, Mn^{2+} Fe^{2+} and Co^{2+} are d^4, d^5,d^6 and d^7$ drespectively. Which one of the following will exhibit minimum paramagnetic behaviour? (At. no. Cr = 24, Mn = 25, Fe = 26, CO = 27) |
Answer |
|
Which one is most reactive towards electrophilic reagent? |
Answer |
