MCQ
The compound $(SiH_3)_3N$ is expected to be
- Apyramidal and more basic than $(CH_3)_3N$
- ✓planar and less basic than $(CH_3)_3N$
- Cpyramidal and less basic than $(CH_3)_3N$
- Dplanar and more basic than $(CH_3)_3N$
✓
Answer
Correct option: B.
planar and less basic than $(CH_3)_3N$
b
The compound $\left( SiH _3\right)_3 N$ is planar and less basic than $\left( CH _3\right)_3 N$ because the lone pair of electrons on $N$ in $\left( SiH _3\right)_3 N$ are used in $p \pi- d \pi$ back bonding by $Si$ atom while such $p \pi- d \pi$ bonding is not possible in $\left( CH _3\right)_3 N$ due to absence of vacant $d$-orbital in carbon.
The compound $\left( SiH _3\right)_3 N$ is planar and less basic than $\left( CH _3\right)_3 N$ because the lone pair of electrons on $N$ in $\left( SiH _3\right)_3 N$ are used in $p \pi- d \pi$ back bonding by $Si$ atom while such $p \pi- d \pi$ bonding is not possible in $\left( CH _3\right)_3 N$ due to absence of vacant $d$-orbital in carbon.
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 correct stability order of the following diazonium salt isVedClass-Data Entry
Which of the following statements about zero order reaction is not true
Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$:
→Assertion $A$: Alcohols react both as nucleophiles and electrophiles.
Reason $R$: Alcohols react with active metals such as sodium, potassium and aluminum to yield corresponding alkoxides and liberate hydrogen.
In the light of the above statements, choose the correct answer from the options given below:
Total number of optically active compounds from the following is. . . . . .
The osmotic pressure of a solution of $NaCl$ is $0.10$ $atm$ and that of a glucose solution is $0.20$ $atm.$ The osmotic pressure of a solution formed by mixing $1\, L$ of the sodium chloride solution with $2\, L$ of the glucose solution is $x \times 10^{-3}$ atm. $x$ is.......... (nearest integer)
→The species which by definition has $ZERO$ standard molar enthalpy of formation at $298 \mathrm{~K}$ is
→Treatment of a $2^o\, OH$ with $CrO_3 /H_2SO_4$ yields an/a
→Which of the following is most suitable to disperse benzene in water ?
The $pH$ of $0.001 $ molar solution of $HCl$ will be
→In the above reaction find out total product formed as $D$ is.
→