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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2015

  • question_answer
    Of the metals\[Be,\text{ }Mg,\text{ }Ca\]and \[\sin x+\sin y=3(\cos y-\cos x),\]of group 2 in the periodic table, the least ionic chloride will be formed by

    A) Be   

    B) Ca         

    C)  Mg                                       

    D) \[\frac{\sin 3x}{\sin 3y}\]

    Correct Answer: A

    Solution :

    Beryllium halides are covalent in nature instead of ionic. This is due to small size and high charge of \[M{{V}^{-1}}\] ion i.e., it has high polarising power. However, the bolides of other alkaline earth metals (fluorides, chlorides, bromides and iodides) are ionic solids.                                


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