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In a monoclinic unit cell, the relation of sides and angles are respectively :

  • Option 1)

    a= b\neq c\: and\: \alpha = \beta = \gamma = 90^{\circ}

  • Option 2)

    a\neq b\neq c\: and\: \alpha = \beta = \gamma = 90^{\circ}

  • Option 3)

    a\neq b\neq c\: and\: \beta = \gamma = 90^{\circ}\neq \alpha

  • Option 4)

    a\neq b\neq c\: and\: \alpha\neq \beta \neq \gamma\neq 90^{\circ}

 

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As we have learned

Seven crystal systems -

On the basis of edge length and interaxial angle,crystal system are of seven types- cubic, tetragonal, orthorhombic, monoclinic, hexagonal, triclinic, rhombohedral.

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 Fact 

 


Option 1)

a= b\neq c\: and\: \alpha = \beta = \gamma = 90^{\circ}

Option 2)

a\neq b\neq c\: and\: \alpha = \beta = \gamma = 90^{\circ}

Option 3)

a\neq b\neq c\: and\: \beta = \gamma = 90^{\circ}\neq \alpha

Option 4)

a\neq b\neq c\: and\: \alpha\neq \beta \neq \gamma\neq 90^{\circ}

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