Types of Crystalline Solids
Trending Questions
Q.
Which hydrogen bond is stronger intermolecular or intramolecular?
Q.
Which molecule contains both polar and nonpolar covalent bond?
Q.
Why water is liquid and Hydrogen sulphide gas?
Q.
LiF is an example of
molecular crystal
covalent crystal
ionic crystal
metallic crystal
Q. 33. Br- ions form a close packed structure. If the radius of Br- ion is 195pm, calculate the radius of the cation that just fits into the tetrahedral hole. Can a cation A+ having a radius of 82pm be slipped into the octahedral hole of the crystal A+Br- ?
Q.
Silicones surrounded by non-polar alkyl groups are:
Water repelling in nature
Water attracting in nature
None of these
Co-ordinate compounds
Q.
Crystals of covalent compounds always have
Atoms as their structural units
Molecules as structural units
Ions held together by electrostatic forces
High melting points
Q. The magnitude of surface tension of liquid depends on the attractive forces between the molecules.
Arrange the following in increasing order of surface tension: water , alcohol (C2H5OH) and hexane [CH3(CH2)4CH3]
Arrange the following in increasing order of surface tension: water , alcohol (C2H5OH) and hexane [CH3(CH2)4CH3]
Q. Which of the following options is true regarding non-polar molecular solids?
- Atoms or molecules are held by weak dispersion forces or London forces
- They are soft, non-conductors of electricity
- All of the above
- They have low melting point and are usually in liquid or gaseous state at room temperature and pressure
Q. 28. In NaCl Crystal actual radius is 0.525. if the radius of Cl- ion is 250 pm then the minimum distance between two cl- ions will be?
Q. A solid XY has NaCl structure. If radius of X+ is 100 pm, what is the radius of Y− ion?
Q. Q 19/60 The two ions A and B have radii 40 pm and 120 pm respectively. In the closed packed crystal of compound AB, thecoordination number of A+ would be
Q. what is the chemical bonding of hydrogen and chlorine?show the diagram.
Q. Match the following type of solids with forces between the molecules
- Electrostatic force
- Metallic bonding
- Dipole−dipole interaction
- Covalent bonding
Q. Why does 2p_{z }have sigma bonding? Shouldnt it have pi bonding?
Q. No.of bondingelectron pairs in N2 on the basis of MOT
Q. Ammonium chloride crystallises in a body centered cubic lattice with a unit distance of 386 pm. Calculate the radius (in pm) of NH+4 ion. If the radius of Cl− ion is 181 pm
(Take √3=1.73)
(Take √3=1.73)
Q. Viscosity of a liquid arises due to strong intermolecular forces existing between the molecules. The stronger the intermolecular forces, the greater is the viscosity. Name the intermolecular forces existing in the following liquids and arrange them in the increasing order of their viscosities. Also give reason for the assigned order in one line.
Water, hexane (CH3CH2CH2CH2CH2CH3), glycerine (CH2OHCH(OH)CH2OH).
Water, hexane (CH3CH2CH2CH2CH2CH3), glycerine (CH2OHCH(OH)CH2OH).