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Mixed & Application

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  1. 1.

    Why can phosphorus form PCl5 but nitrogen cannot form NCl5?

  2. 2.

    The diagonal relationship between Be and Al includes all EXCEPT:

  3. 3.

    CO2 is a gas while SiO2 is a solid because:

  4. 4.

    The diagonal relationship Li-Mg means:

  5. 5.

    The first element of each group is anomalous due to:

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