12th Class Chemistry The p-block Elements-II / p-ब्लॉक तत्व-II Question Bank 12th CBSE Chemistry The P-Block Elements

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      Give reasons : (i) HF is stored in wax coated bottles (ii) Nitric acid becomes yellow on long standing

    Answer:

      Nitrogen, oxygen and fluorine show anomalous properties (i) Melting point and boiling point of  and  are abnormally high. (ii) Maximum valency of N, and O are 4 and of (b)                                hybridisation            hybridisation Distorted T shape            Square planar shape


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