MCQ
Given below are two statements:

Statement-$I$: Since fluorine is more electronegative than nitrogen, the net dipole moment of $\mathrm{NF}_3$ is greater than $\mathrm{NH}_3$.

Statement-$II$: In $\mathrm{NH}_3$, the orbital dipole due to lone pair and the dipole moment of $\mathrm{NH}$ bonds are in opposite direction, but in $\mathrm{NF}_3$ the orbital dipole due to lone pair and dipole moments of $N-F$ bonds are in same direction.  In the light of the above statements. Choose the most appropriate from the options given below.

  • A
    Statement $I$ is true but Statement $II$ is false.
  •  Both Statement $I$ and Statement $II$ are false.
  • C
     Both statement $I$ and Statement $II$ is are true.
  • D
    Statement $I$ is false but Statement $II$ is are true.

Answer

Correct option: B.
 Both Statement $I$ and Statement $II$ are false.
b

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

One mole of $1,2$ -dibromopropane on treatment with $X \,moles$ of $NaNH_2$  followed by treatment with ethyl bromide gave a pentyne. The value of $X$ is
In a constant volume calorimeter, $3.5 \mathrm{~g}$ of a gas with molecular weight $28$ was burnt in excess oxygen at $298.0 \mathrm{~K}$. The temperature of the calorimeter was found to increase from $298.0 \mathrm{~K}$ to $298.45 \mathrm{~K}$ due to the combustion process. Given that the heat capacity of the calorimeter is $2.5 \mathrm{~kJ} \mathrm{~K}^{-1}$, the numerical value for the enthalpy of combustion of the gas in $\mathrm{kJ} \mathrm{mol}^{-1}$ is
Which $L$ -sugar on oxidation gives an optically active dibasic acid
On passing $HCl$ gas in saturated solution of $NaCl$, the solubility of $NaCl$ 
According to the reaction $PbC{l_2} = P{b^2} + 2C{l^ - },$the solubility coefficient of $PbC{l_2}$ is
Consider the following transformations of a compound $P$.

(image)

Choose the correct option($s$).

(image)

Find number of electrons present in $34\,g$ of $NH_3(g)$. .....................$N_A$
The most common oxidation state of an element is $-2.$  The number of electrons present in its outermost shell is
If $\lambda _L, \lambda _M$ and $\lambda _N$ are the wave lengths of electron in $L, M, N$ energy levels of $H-$ atom respectively. What is their decreasing order :
The equivalent weight of $H_3PO_4$ in the reaction is $Ca{(OH)_2}\, + \,{H_3}P{O_4}\, \to \,CaHP{O_4}\, + \,2{H_2}O$

$(Ca = 40,\,P = 31,\,O = 16)$