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    Coordination complex of Cr

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    Question#1

    Please give the answer and explain how to find the following.

    For [Cr(NH3)2(en)2]Cl3

    a) give the oxidation number
    b) give the coordination number of Cr

    Question#2

    Give the formula of the compound.

    calcium triaquabromodicyanoferrate(II)

    Question # 3

    An atom in a certain compound uses sp^2 hybrid orbitals. How many sp^2 hybrid orbitals are there on the atom?

    Question #4

    In a certain molecule a certain atom uses sp3d hybrid orbitals. How many sp3d orbitals are on the atom?

    © BrainMass Inc. brainmass.com December 24, 2021, 11:09 pm ad1c9bdddf
    https://brainmass.com/chemistry/bonding/coordination-complex-542286

    SOLUTION This solution is FREE courtesy of BrainMass!

    Q1. [Cr(NH3)2(en)2]Cl3

    Let 'x' be oxidation state of Cr.

    x +2(0) + 2(0) +3(-1) = 0. Hence x = +3

    NH3 is monodentate and en is bidentate. Hence there is a total of 6 ligand binding sites to Cr which gives it a coordination number of 6. The 3Cl are not part of the coordination as those are ionic bonds.

    Q2. Ca[Fe(H2O)3 (CN)2 Br]2

    Q3. Number of hybrid orbitals = number of atomic orbitals used. Three atomic orbitals 1 's' + 2 'p' are used to form sp^2. Hence 3 hybrid orbitals form.

    Q4. Similarly there should be 5 coming from 1 's' + 3 'p' + 1 'd'.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    © BrainMass Inc. brainmass.com December 24, 2021, 11:09 pm ad1c9bdddf>
    https://brainmass.com/chemistry/bonding/coordination-complex-542286

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