The electronegativity difference between N and F is greater that that between N and H yet the dipole moment of NH3 (1.5 D) is larger than that of NF3(0.2D). This is because:
Held on 30 Apr 2006 · Verified 9 Jul 2026.
In NH3 as well as in NF3 the atomic dipole and bond dipole are in the same direction
In NH3 the atomic dipole and bond dipole are in the same direction whereas in NF3 these are in opposite directions
In NH3 as well as NF3 the atomic dipole and bond dipole are in opposite directions
In NH3 the atomic dipole and bond dipole are in the opposite directions whereas in NF3 these are in the same direction
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Which of the following is the most electronegative element?
Which of the following statements are true? A. Unlike Ga that has a very high melting point, Cs has a very low melting point. B. On Pauling scale, the electronegativity values of N and Cl are not the same. C. $\mathrm{Ar}, \mathrm{K}^{+}, \mathrm{Cl}^{-}, \mathrm{Ca}^{2+}$, and $\mathrm{S}^{2-}$ are all isoelectronic species. D. The correct order of the first ionization enthalpies of $\mathrm{Na}, \mathrm{Mg}, \mathrm{Al}$, and Si is $\mathrm{Si}\gt\mathrm{Al}\gt\mathrm{Mg}\gt\mathrm{Na}$. E. The atomic radius of Cs is greater than that of Li and Rb . Choose the correct answer from the options given below
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Match List - I with List - II $\begin{array}{llll} & \text{List-I} & & \text{List-II} \\A. & \mathrm{XeO}_3 & I. & \mathrm{sp}^3 \mathrm{~d}, \text{linear} \\B. & \mathrm{XeF}_2 & II. & \mathrm{sp}^3 ; \text{pyramidal} \\C. & \mathrm{XeOF}_4 & III. & \mathrm{sp}^3 \mathrm{~d}^3 ; \text{distorted octahedral} \\D. & \mathrm{XeF}_6 & IV. & \mathrm{sp}^3 \mathrm{~d}^2 ; \text{square pyramidal}\end{array}$ Choose the correct answer from the options given below:
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