Which of the following compound CANNOT act as a Lewis base?
Show Hint
- \(\mathrm{SF_4}\)
- \(\mathrm{NF_3}\)
- \(\mathrm{ClF_3}\)
- \(\mathrm{PCl_5}\)
The Correct Option is D
Solution and Explanation
\(\mathrm{SF_4}\): S has one lone pair (see-saw shape), so it can donate.
\(\mathrm{NF_3}\): N has one lone pair (although weakly basic), so it can donate.
\(\mathrm{ClF_3}\): Cl has two lone pairs (T-shape), so it can donate.
\(\mathrm{PCl_5}\): P uses all five valence electrons in bonding, there is no lone pair on P (trigonal bipyramidal); it acts only as a Lewis acid.
Answer: (4) \(\mathrm{PCl_5}\)
Top JEE Main Chemistry Questions
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)- At equilibrium the concentrations of and in a sealed vessel at . What will be for the reaction
- Find out the major products from the following reactions
Cobalt chloride when dissolved in water forms pink colored complex $X$ which has octahedral geometry. This solution on treating with cone $HCl$ forms deep blue complex, $\underline{Y}$ which has a $\underline{Z}$ geometry $X, Y$ and $Z$, respectively, are
- The correct order of atomic radii is:
Top JEE Main Ionic Equilibrium In Solution Questions
- Which of the following has the highest 3rd ionization energy?
- Which of the following elements has the highest 1st ionization energy ?
- Which of the following is least iconic
- $\text{The pH of an aqueous solution containing 1 M benzoic acid (} pK_a = 4.20 \text{) and 1 M sodium benzoate is 4.5.}$
\(\text{The volume of benzoic acid solution in 300 mL of this buffer solution is \_\_\_\_\_\_ mL.}\) - The spin only magnetic moment of complex ion \([Ni(NH_3)_6]^{2+}\)+ is \(X \times 10^{-1}\) \(BM\). The value of \(X\) is
Top JEE Main Questions
- Two masses $m$ and $\frac{m}{2}$ are connected at the two ends of a massless rigid rod of length $l$. The rod is suspended by a thin wire of torsional constant $k$ at the centre of mass of the rod-mass system(see figure). Because of torsional constant $k$, the restoring torque is $\tau =k\theta$ for angular displacement $\theta$. If the rod is rota ted by $\theta_0$ and released, the tension in it when it passes through its mean position will be:
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)- The value of is
- The number of terms of an is even. The sum of the odd terms is and of the even terms is . The last term exceeds the first by . Then the number of terms in the series is ______.
A black body is at a temperature of 2880 K. The energy of radiation emitted by this body with wavelength between 499 nm and 500 nm is U1, between 999 nm and 1000 nm is U2 and between 1499 nm and 1500 nm is U3. The Wien's constant, b = 2.88×106 nm-K. Then,