Question
Explain the difference between non-polar and polar atoms or molecules by giving examples.
✓
Answer
In non-polar atoms or molecules, the centres of distribution of negative and positive charges coincide, due to which the dipole moment remains zero. In polar molecules, there is a gap between the centres of distribution of these charges and the molecule has a permanent dipole moment.
$N _2, CH _4, H _2 O , O _2$ etc. are non-polar whereas $H _2 O$, $NH _3, HCl$ etc. are polar molecules,
$N _2, CH _4, H _2 O , O _2$ etc. are non-polar whereas $H _2 O$, $NH _3, HCl$ etc. are polar molecules,
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 plates of a parallel-plate capacitor are made of circular discs of radii 5.0cm each. If the separation between the plates is 1.0mm, what is the capacitance?
What is image? Explain its types.
Find the equivalent resistance of the network shown in figure. between the points a and b.
The $\text{K}_\beta$ X-ray of argon has a wavelength of 0.36nm. The minimum energy needed to ionize an argon atom is 16eV. Find the energy needed to knock out an electron from the K shell of an argon atom.
→Mention two important conclusions regarding the relation between electric field and electric potential.
In Ampere's $\oint\overrightarrow{\text{B}}.\text{d}\overrightarrow{\text{l}}=\mu_0\text{i},$ the current outside the curve is not included on the right hand side. Does it mean that the magnetic field B calculated by using Ampere's law, gives the contribution of only the currents crossing the area bounded by the curve?
→What is the importance of binding energy per nucleon ?
The magnetic force on a charged particle is always perpendicular to its velocity. Can the magnetic force change the velocity of the particle? Speed of the particle?
A student records the following data for the magnitudes (B) of the magnetic field at axial points at different distances x from the centre of a circular coil of radius a carrying a current I. Verify (for any two) that these observations are in good agreement with the expected theoretical variation of B with x.
→| $x \rightarrow$ | x = 0 | x - a | x = 2 a | x = 3a |
| $y \rightarrow$ | $B _0$ | $0.25 \sqrt{2} B_0$ | $0.039 \sqrt{5} B_0$ | $0.010 \sqrt{10} B_0$ |
A test charge 'q' is moved without acceleration from A to C along the path from A to B and then from B to C in electric field E as shown in the figure. (i) Calculate the potential difference between A and C. (ii) At which point (of the two) is the electric potentialmore and why?
