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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 29

  • question_answer
    There are five types of 2D-lattice which differ in the symmetry of arrangement of points. Which of the following 2D-lattice is not possible?

    A) Hexagonal          

    B)        Pentagonal 

    C)     Parallelogram     

    D)        Rectangular

    Correct Answer: B

    Solution :

      [b] Pentagonal lattice is not possible because the interior angle of a regular pentagonal is \[108{}^\circ \] which is not an integral factor of \[360{}^\circ \]     


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