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Question
The elements of symmetry in a crystal are:
The elements of symmetry in a crystal are:
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Solution
The correct options are
A plane of symmetry
B centre of symmetry
D axis of symmetry
The elements of symmetry in a crystal are plane of symmetry, axis of symmetry and centre of symmetry. A cubic crystal has maximum symmetry.
Plane of symmetry is that imaginary plane which passes through the centre of the crystal and divides it into two equal portions (just mirror images of each other).
Axis of symmetry is that imaginary straight line on which rotation of crystal gives similar appearance more than one time. It is two fold, three fold, four fold and six fold type respectively.
Centre of symmetry is an imaginary point which divides the surface of the crystal at equal distances in both directions by drawing any line through it. A crystal can have only one centre of symmetry.
A plane of symmetry
B centre of symmetry
D axis of symmetry
The elements of symmetry in a crystal are plane of symmetry, axis of symmetry and centre of symmetry. A cubic crystal has maximum symmetry.
Plane of symmetry is that imaginary plane which passes through the centre of the crystal and divides it into two equal portions (just mirror images of each other).
Axis of symmetry is that imaginary straight line on which rotation of crystal gives similar appearance more than one time. It is two fold, three fold, four fold and six fold type respectively.
Centre of symmetry is an imaginary point which divides the surface of the crystal at equal distances in both directions by drawing any line through it. A crystal can have only one centre of symmetry.
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