Consider the following molecules/species: The correct order of carbon - oxygen double bond length is :

Consider the metal complexes $\left[\mathrm{Ni}(\mathrm{en})_3\right]^{2+}(\mathrm{A}),\left[\mathrm{NiCl}_4\right]^{2-}(\mathrm{B})$ and $\left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right]^{2+}(\mathrm{C})$. Choose the CORRECT option by considering the number of unpaired electrons present in...

Pairs of elements with the same number of electrons in their respective 4 f orbital are [Atomic number. Eu-63, Gd-64,...

The electronegativity of a group 13 element ' $E$ ' is same as that of Ge (on Pauling scale and...

The $1^{\text {st }}$ ionization enthalpy for Mg is $+737 \mathrm{~kJ} / \mathrm{mol}$. The most probable estimated value of the...

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20 mL of a solution of acetic acid required 28.4 mL of 0.1 M NaOH for its neutralization. A solution...

At $27^{\circ} \mathrm{C}, 0.1 \mathrm{M}, 1 \mathrm{LK}_4\left[\mathrm{Fe}(\mathrm{CN})_6\right]$ aqueous solution and $0.1 \mathrm{M}, 1 \mathrm{LFeCl}_3$ aqueous solution are placed in a...

Which of the following pictorial diagram most correctly represents the $\pi^*$ ( $\pi$ antibonding) molecular orbital between two atoms if...

The species having identical radii according to the Bohr's theory are: A. H (first orbit) B. $\mathrm{He}^{+}$(first orbit) C. $\mathrm{He}^{+}$(Second...

The correct order of total number of atoms present in (A) 2 moles of cyclohexane (B) 684 g of sucrose...

A non-volatile, non-electrolyte solid solute when dissolved in 40 g of a solvent, the vapour pressure of the solvent decreased...

The pH of a solution obtained by mixing 5 mL of $0.1 \mathrm{MNH}_4 \mathrm{OH}$ solution with 250 mL of $...

2.0 g of a bromo hydrocarbon $(\mathrm{X})$ was subjected to Carius analysis, gave 3.36 g of AgBr . The percentage...

Consider the following sequence of reactions to give the major product (X)
P g of the major product (X)...

According to Lewis theory, the total number of $\sigma$ bond-pairs and lone pair of electrons around the central atom of...

Identify the colour of compound ' X ' in the sequence of the reaction.

Match the LIST-I with LIST-II
Choose the correct answer from the options given below: