Short Answer Type‘Crystalline solids are anisotropic in nature’. What does this statement mean?
All crystalline solids are not anisotropic. Those crystalline solids which are anisotropic have their atoms arranged and spaced in a different manner in three different planes (X, Y and Z). Therefore, the physical properties of crystalline solids such as electrical resistance or refractive index show different values when measured along different directions in the same crystals.
Example NaCl, Quartz, Ice, HCl, Iron, etc.
The chemistry of corrosion of iron is essentially an electrochemical phenomenon. Explain the reactions occurring during the corrosion of iron in the atmosphere.
State reasons for each of the following:
The N-O bond in is shorter than the N-O bond in
State reasons for each of the following:
(i) All the P-Cl bonds in PCl5 molecule are not equivalent.
(ii) Sulphur has a greater tendency for catenation than oxygen.
Switch
G° for the following reaction: 
