WorksheetsCHAPTER 6: Bonding in coordination compound (part 1)
Total questions: 8
Worksheet time: 4mins
In coordination chemistry, the donor atom of a ligand is
a Lewis acid
the counter ion
the central metal atom
the atom in the ligand that shares an electron pair with the metal
(Valance Bond Theory) Magnetic measurements indicate that [Co(OH2)6]2+ has 3 unpaired electrons. Therefore, the hybridization of the metal's orbitals in [Co(OH2)6]2+ is:
sp3
dsp2
sp3d2
d2sp3
(Valence Bond Theory) The coordination complex, [Cu(OH2)6]2+ has one unpaired electron. Which of the following statements are true?
(1) The complex is octahedral.
(2) The complex is an outer orbital complex.
(3) The complex is d2sp3 hybridized.
(4) The complex is diamagnetic.
(5) The coordination number is 6.
1, 4
1, 2, 5
2, 3, 5
2, 3
(Crystal Field Theory) Which one of the following statements is FALSE?
In an octahedral crystal field, the d electrons on a metal ion occupy the eg set of orbitals before they occupy the t2g set of orbitals.
Low spin complexes can be paramagnetic.
In high spin octahedral complexes, oct is less than the electron pairing energy, and is relatively very small.
Low spin complexes contain strong field ligands.
(Crystal Field Theory) When the valence d orbitals of the central metal ion are split in energy in an octahedral ligand field, which orbitals are raised least in energy?
dxy and dx2-y2
dx2-y2 and dz2
dxy, dxz and dyz
dxz and dyz
(Crystal Field Theory) How many unpaired electrons are there in a strong field iron(II) octahedral complex?
0
1
2
4
(Crystal Field Theory) Consider the complex ion [Mn(OH2)6]2+ with 5 unpaired electrons. Which response includes all the following statements that are true, and no false statements?
I. It is diamagnetic.
II. It is a low spin complex.
III. The metal ion is a d5 ion.
IV. The ligands are weak field ligands.
V. It is octahedral.
I, II
I, IV
III, IV
III, IV, V
(Crystal Field Theory) Strong field ligands such as CN-:
usually produce high spin complexes and small crystal field splittings
usually produce low spin complexes and small crystal field splittings
usually produce low spin complexes and high crystal field splittings
usually produce high spin complexes and high crystal field splittings
