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Crystalline solids have...

Crystalline solids have

A

short range order only

B

long range order only

C

neither short range nor long range order

D

both short range and nor long range order

Text Solution

Verified by Experts

The correct Answer is:
4

We can distinguish crystalline and amorphous solids by the presence or absence of long range order on the molecular scale,Long range order usually is visible to the unaided eye is crystalline solids which occur in characteristics shapes called crystals ,The existence of crystals is a consequence of long range order,or repetitions or glasses do not have the crystalline from and the accompanying long range atomic order of crystalline solids.They have only short range order which is possessed by crystals also.
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Solids have properties like rigidity a definite shape and a define volume. If intermolecular forces are greater than thermal energy, substances exist as solid. Solids can be classified into two types. Crystalline solids and amorphous solids, Crystalline solids have regular arrangement of particles, definite geometric shapes, sharp melting points and definite heat of fusion. They are anisotropic and undergo clean cleavage. On the other hand, amorphous solid have no regular arrangement of particles, irregular shapes, melt over a range of temperature, no definite heat of fusion. They are isotropic and undergo irregular cleavage. The melting point of crystalline solids is sharp due to:

Solids have properties like rigidity a definite shape and a define volume. If intermolecular forces are greater than thermal energy, substances exist as solid. Solids can be classified into two types. Crystalline solids and amorphous solids, Crystalline solids have regular arrangement of particles, definite geometric shapes, sharp melting points and definite heat of fusion. They are anisotropic and undergo clean cleavage. On the other hand, amorphous solid have no regular arrangement of particles, irregular shapes, melt over a range of temperature, no definite heat of fusion. They are isotropic and undergo irregular cleavage. Solid X is very hard, electrical insulator in solid as well as molten state and melts at extremely high temperature. Name the type of solid is it?

Knowledge Check

  • Consider the following statements and choose the correct response from the option given thereafter I.All crystalline solids are true solids II.Some crystalline solids are true solids III. All crystalline solids have sharp melting point IV. All crystalline solids have irregular shape which of the above statement are incorrect

    A
    I and III
    B
    I and IV
    C
    III and IV
    D
    II and IV
  • (A) Crystalline solids are anisotropic. (R) Crystalline solids are not as closely packed as amorphous solids.

    A
    Both (R) and (A) are true and reason is the correct explanation of assertion.
    B
    Both (R) and (A) are true but reason is not correct explanation of assertion
    C
    Assertion (A) is true but reason (R) is false
    D
    Assertion (A) and reason (R) both are false
  • Crystalline solids are

    A
    glass
    B
    plastic
    C
    rubber
    D
    sugar
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