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  QUESTION 6:                The boiling point of ammonia is higher than of phosphine. Explain   SOLUTION:                      Ammonia, NH3 have strong hydrogen bonding whereas phosphine, PH 3 have simple vander waals forces as intermolecular forces. Thus more energy is required to overcome hydrogen bonding present in ammonia. As a result ammonia has high boiling point than phosphine.   QUESTION 7:                An element X conducts electricity and melts at 660 0 C. It reacts vigorously with chlorine, after initial warning, to give a solid chloride of x. The solid chloride sublimes at 180 0 C. The chloride vapour has a relative molecular mass of 267 but at much higher temperatures it is known to disdociate to a single compound of relative molecular mass 133.5. When an aqueous solution of the chloride ...

  SHAPE OF XENON TETRAFLOURIDE XeF 4 :                Ground state configuration of xenon is;                56 Xe = 2, 8, 18, 18, 8                =15 2 , 25 2 , 2p 6 , 35 2 , 30 6 , 3d 10 , 45 2 , 4p 6 , 4d 10 , 4f 0 , 55 2 , 5p 6 .                On orbital hybridization two electrons from   5 pare promoted to empty 4f orbital. Excited state configuration of Xenon is; There are two lone pair and four bond pairs around the central xenon atom. The shape of XeF 4 is square planer. Two lone pair occupy axial position and four bond pair angles are 90 0 . QUESTION:                Antimony, Sb is in Group V of the periodic table atomic configuration of 5b is 51 with the electronic configuration of;                515b = 2, 8...