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Why lithium halides show covalent nature...

Why lithium halides show covalent nature.

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Because lithium ion has high polarisation capability.
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Why is lithium iodide more covalent than lithium fluoride ?

Lithium fluroide (LiF) is mainly ionic but lithium iodide (LiI) is covalent in nature. Assign reason.

Knowledge Check

  • Assertion: Lithium fluoride is most covalent in nature. Reason: Small anion an be easily distorted.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion
    C
    If assertion is true but reason is false.
    D
    If both assertion and reason are false.

  • Given below are two statements : One is labelled as Assertion A and the other labelled as Reason R. Assertion A : Lithium halides are some what covalent in nature. Reason R : Lithium possess high polarisation capability. In the light of the above statements, choose the most appropriate answer from the options given below :

    A
    A is true but R is false
    B
    A is false but R is true
    C
    Both A and R are true but R is NOT the correct explanation of A
    D
    Both A and R are true but R is the correct explanation of A

  • The lattice energy of the lithium halides is in the following order

    A
    LiFgtLiClgtLiBrgtLiI
    B
    LiClgtLiFgtLiBrgtLiI
    C
    LiBrgtLiClgtLiFgtLiI
    D
    LiIgtLiBrgtLiClgtLiF

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    Copper (I) and silver (I) halides are more covalent in nature compared to sodium and potassium halides although the charges on the ions are same. How do you account for this?

    Why are pentahalides more covalent than trihalides?

    Which lithium halide is soluble in ethanol, acetone, ethylacetate as well as pyridine?

    The order of solubility of lithium halides in non polar solvents follows the order :

    Consider the following statements: S_(1) : Among alkali metal halides lithium iodide is the most covalent in nature. S_(2) : Potassium has greater photoelectric work function than sodium. S_(3) : The blue solution osf alkali metals in liquid ammonia is stable at room temperature, where ammonis is still a liquid, in the presence of Fe. S_(4) : The melting and boilling points of alkali metal halides always follow the trend : chloride gt flouridegtbromidegtiodide. and arrange in the order of true/iodide.

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