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Bivalent cation is...

Bivalent cation is

A

aluminium

B

gold

C

nickel

D

sodium.

Text Solution

Verified by Experts

The correct Answer is:
C
Nickel is `Ni^(2+)`.
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In a close-packed structure of oxides, one-eighth of the tetrahedral holes is occupied by bivalent cations (A) and half of the octahedral hole are occupied by trivalent cations (B) , calculate the molecular formula of the oxide.

Name the element in each of the following cases: (i) A bivalent anion of the element having 10 electrons (ii) A trivalent cation of the element having 10 electrons. What is the relationship between the two ions called ?

Knowledge Check

  • Match List - I with List - II {:(,"List - I",,"List - II"),((P),"Zinc blende structure",(1),"oxide ions in hcp and 2/3rd of octahedral voids occupied by the trivalent cation."),((Q),"Anti-fluorite structure",(2),"anion in FCC arrangement and alternate tetrahedral voids occupied by bivalent cation."),((R ),"Corundum structure",(3),"Oxide ions in face centres of cubic, bivalent cations in corners and one tetravalent cation ions."),((S),"Pervoskie structure",(4),"Anions in FCC and cations in all tetrahedral voids"):}

    A
    P-1, Q-2, R-4, S-3
    B
    P-2, Q-4, R-1, S-3
    C
    P-4, Q-1, R-3, S-3
    D
    P-4, Q-3, R-2, S-1

  • Bivalents in meiosis are

    A
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    B
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    C
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    D
    Pairs of homozygous chromosomes

  • Bivalent formation is a characteristic feature of

    A
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    B
    Zygotene
    C
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    D
    Diakinesis

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