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What are cations and anions ?...

What are cations and anions ?

Text Solution

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Positively charged ions are called cations and negatively charged ions are called anions.
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In the crystals of which of the following ionic compounds would you expect maximum distance between the centres of the cations and anion?

Give examples of three cation and three anions which are iso electronic with argon.

Knowledge Check

  • K_(sp) = [A]^3 [B]^2 for the salt where A and B are the cation and anion as the case may be stands true for

    A
    `As_2S_3`
    B
    `Ca_3(PO_4)_2`
    C
    `Bi_2S_3`
    D
    All are correct

  • In a cubic crystal anions are arranged in fcc arrangement and the cations occupy all the octahedral voids and half the tetrahederal voids. The ratio of the cations and anions in the crystal is

    A
    `1:1`
    B
    `2:1`
    C
    `1:2`
    D
    `3:2`

  • If sodium sulphate is considered to be completely dissociates into cations and anions in aqueous solution, the change in freezing point of water (DeltaT_f) , when 0.01 mol of sodium sulphate is dissolved in 1 kg of water , is (K_f=1.86 K kg mol^(-1))

    A
    0.0558 K
    B
    0.0744 K
    C
    0.0186 K
    D
    0.0372 K

    • Similar Questions

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    If a crystal a contains a total of N atoms and n Schottky defects are produced by removing n cations and r anions from the interior of the crystal, then n = ……. .

    The crystal AB (rock salt structure) has molecular weight 6.023Y u , where Y is an arbitrary number in u . If the minimum distance between cation and anion is Y^(1/3) nm and the observed, The density is 20 kg m^(-3) . Find a. The density in kg m^(-3) . and b. The type of defect

    In the calcium fluoride structure, the coodination number of the cation and the anion are, respectively,

    CsBr has bcc structure with edge length of 43 pm . The shortest interionic distance between cation and anion is

    If sodium sulphate is considered to be completely dissociated into cations and anions in aqueous solution, the change in freezing point of water (Delta T_(f)) , when 0.01 mol of sodium sulphate is dissolved in 1 kg of water, is ( K_(f)=1.86 "K kg mol"^(-1) ) :

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