Use Coupon: CART20 and get 20% off on all online Study Material

Total Price: R

There are no items in this cart.
Continue Shopping
Get instant 20% OFF on Online Material.
coupon code: MOB20 | View Course list

Get extra R 650 off


why some substances sublime? why liquid state doesnot exist in iodine, napthalene etc.   ???

6 years ago


Answers : (1)


Dear deeksha,

Sublimation is the transition of a substance from the solid phase to the gas phase without passing through an intermediate liquid phase. The reverse process is also known as Deposition. Sublimation is an endothermic phase transition that occurs at temperatures and pressures below a substance's triple point in its phase diagram.

It basically has to do with the mass and dispersion forces. Iodine has the most mass and the most electrons, so it has the strongest dispersion forces and so is able to exist as a solid.


Please feel free to post as many doubts on our discussion forum as you can.

We are all IITians and here to help you in your IIT JEE preparation.

All the best.


win exciting gifts by answering the questions on Discussion Forum

6 years ago

Post Your Answer

Other Related Questions on Physical Chemistry

How to use log table????????Its urgent please sort out it as soon as possible.. Just go through this link and you will get this.
Suraj Prasad 3 months ago
here are the way u can use log tables for multiplication of numbers 1- Understand how to multiply numbers using their logarithms. 2- Look up the logarithms of the two numbers you want to...
Umakant biswal 3 months ago
Calculate the pressure exerted by one mole of CO 2 gas at 273 K if the van der Waa ls‟ constant a = 3.592 dm 6 atm mol – 2 . Assume that the volume occupied by CO 2 molecules is negligible.
but this question is an iit jee advanced 2000 chemistry question....they too have not specified the volume...
Balaji Krishnamachari 15 days ago
Since Volume of container is not specified the Real gas eqn. would get remained in terms of volume. Negligible molecules volume would only led the b constant to zero. Mention the Volume of...
Vikas TU 16 days ago
The total mass of 1 mole of electrons is ?(Mass of 1electron=9.1*1o-28g)
MASS OF I MOLE ELECTRON=MASS OF 6.022X10 23 ELECTRONS Mass of 1electron=9.1*1o-28g hence mass of 6.022X10 23 ELECTRONS = 9.1*1o-28gx 6.022X10 23
bhavika 3 months ago
an alkyl halide, C6H13Cl reacts with potassium tertiary butoxide gives isomeric alkenes Y and Z. both alkenes give2,3- di methyl butane. identyfy y and z?
Please refer to the Askiitians Notes from here:
Vikas TU one month ago
I have the honour to state that I have faced some problem with those question below: 1.which compound dissolves in water:alkene,alkyne,alkane,benzene. 2.why C 6 H 5 OH is more acidic than...
@ emon i am answering the 2 nd part of your question . c6h5oh is more acidic due to resonance stabilised phenoxide ion . on the other hand in the case of ch3oh neither ethanol nor ethoxide...
Umakant biswal one month ago
How bond dissociation energy depends on mass of isotopes i.e. neutron??
All this can be understood via Einstein’s mass enrgy relation. that is E = mc^2. thus the nucleus consists protons and neutrons both there is a major role of neutron in bond dissociation...
Vikas TU 2 months ago
View all Questions »

  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: R 15,000
  • View Details
Get extra R 3,750 off

Get extra R 650 off

More Questions On Physical Chemistry

Ask Experts

Have any Question? Ask Experts

Post Question

Answer ‘n’ Earn
Attractive Gift
To Win!!!
Click Here for details