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Coordination Compounds-CBSE Class 12th NCERT Solution

Sep 4, 2013 16:20 IST

    Get, detailed solutions to the questions of the chapter Coordination Compounds from NCERT textbooks. The objective is to helping students regarding the pattern of answering the question as per the cbse latest marking scheme.Cbse.jagranjosh.com provided you NCERT solutions for classes 12th math and science subjects.

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    Some questions of this chapter are given here.

    Q. Explain the bonding in coordination compounds in terms of Werner’s postulates.

    Answer:

    Werner’s postulates: -

    a) A metal exhibits two types of valencies- primary and secondary. Primary valencies are satisfied by negative ions while secondary valencies are satisfied by both negative and neutral ions. Primary valency can be calculated by oxidation number of the metal ion, whereas the secondary valency refers to the coordination number of the metal ion.
    b) Primary valencies are usually ionizable, while secondary valencies are nonionizable.
    c) A metal ion has a definite number of secondary valencies around the central atom. This valency assigned the definite geometry of the coordination compound.

    Q. Explain with two examples each of the following: coordination entity, ligand,coordination number, coordination polyhedron, homoleptic and heteroleptic.

    Q. What is meant by unidentate, didentate and ambidentate ligands? Give two examples for each.

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    Q. Using IUPAC norms write the formulas for the following:

    i. Tetrahydroxozincate(II)

    ii. Potassium tetrachloridopalladate(II)

    iii. Diamminedichloridoplatinum(II)

    iv. Potassium tetracyanonickelate(II)

    v. Pentaamminenitrito-O-cobalt(III)

    vi. Hexaamminecobalt(III) sulphate

    vii. Potassium tri(oxalato)chromate(III)

    viii. Hexaammineplatinum(IV)

    ix. Tetrabromidocuprate(II)

    x. Pentaamminenitrito-N-cobalt(III)

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