Which of the following statements is not correct?

The fraction of the total volume occupied by the atoms in a primitive cell is 0.48

molecules solids are generally volatile

the number of carbon atoms in a unit cell

The number of Bravais latices in which a crystal can be categorised is 14

Solution

The fraction of the total volume occupied by the atoms in a primitive cell is 0.48

The number of Bravais latices in which a crystal can be categorised is 14

Packing fraction of lattice structure or fraction of total volume occupied

$equals space fraction numerator Volume space occupied space by space atoms space in space straight a space unit space cell over denominator volume space of space the space unit space cell end fraction Packing space fraction space of space simple space cube space equals space fraction numerator straight z space straight x begin display style 4 over 3 end style space πr cubed over denominator straight a cubed end fraction space equals fraction numerator 1 space straight x space begin display style 4 over 3 end style space πr squared over denominator left parenthesis 2 straight r right parenthesis cubed end fraction therefore comma space For space primitive space cell space straight a space space equals space 2 straight r volume space occupied space space equals space 52 percent sign$

Some More Questions From The Solid State Chapter

Why is glass considred a super-cooled liquid?

Refractive index of a solid is observed to have the same value along all directions. Comment on the nature of this solid. Would it show clevage property?

Classify the following solids in different categories based on the nature of intermolecular forces operating in them:
Potassium sulphate, tin, benzene, urea, ammonia, water, zinc
sulphate, graphite, rubidium, argon, silicon carbide.

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The Solid State

Which of the following statements is not correct?

The fraction of the total volume occupied by the atoms in a primitive cell is 0.48

molecules solids are generally volatile

the number of carbon atoms in a unit cell

The number of Bravais latices in which a crystal can be categorised is 14

Some More Questions From The Solid State Chapter

Why is glass considred a super-cooled liquid?

Refractive index of a solid is observed to have the same value along all directions. Comment on the nature of this solid. Would it show clevage property?

Classify the following solids in different categories based on the nature of intermolecular forces operating in them:
Potassium sulphate, tin, benzene, urea, ammonia, water, zinc
sulphate, graphite, rubidium, argon, silicon carbide.

Solid A is a very hard, electrical insulator in solid as well as in molten state and melts at extremely high temperature. What type of solid is it?

Ionic solids conduct electricity in liquid state but not in solid state. Explain.

What type of solids are electrical conductors, malleable and ductile?

Give the significance of a 'lattice point'.

Name the parameters that characterize a unit cell.

Distinguish between Hexagonal and monoclinic unit cells.

Distinguish between Face-centred and end-centred unit cells.

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The Solid State

Which of the following statements is not correct? The fraction of the total volume occupied by the atoms in a primitive cell is 0.48 molecules solids are generally volatile the number of carbon atoms in a unit cell The number of Bravais latices in which a crystal can be categorised is 14

Some More Questions From The Solid State Chapter

Why is glass considred a super-cooled liquid?

Refractive index of a solid is observed to have the same value along all directions. Comment on the nature of this solid. Would it show clevage property?

Classify the following solids in different categories based on the nature of intermolecular forces operating in them: Potassium sulphate, tin, benzene, urea, ammonia, water, zinc sulphate, graphite, rubidium, argon, silicon carbide.

Solid A is a very hard, electrical insulator in solid as well as in molten state and melts at extremely high temperature. What type of solid is it?

Ionic solids conduct electricity in liquid state but not in solid state. Explain.

What type of solids are electrical conductors, malleable and ductile?

Give the significance of a 'lattice point'.

Name the parameters that characterize a unit cell.

Distinguish between Hexagonal and monoclinic unit cells.

Distinguish between Face-centred and end-centred unit cells.

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Which of the following statements is not correct?

The fraction of the total volume occupied by the atoms in a primitive cell is 0.48

molecules solids are generally volatile

the number of carbon atoms in a unit cell

The number of Bravais latices in which a crystal can be categorised is 14

Classify the following solids in different categories based on the nature of intermolecular forces operating in them:
Potassium sulphate, tin, benzene, urea, ammonia, water, zinc
sulphate, graphite, rubidium, argon, silicon carbide.