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Inorganic Chemistry
2. Answer ALL parts a) — c).
a) Explain what is meant by the term ionisation energy.
b) The table below gives the values of the first ionisation energies for selected elements. Comment on and interpret the variations evident in these data.
Element 1 t ionisation Energy (kJ mol-1)
Na 494
Mg 736
AI 577
Si 786
P 1060
S 1000
C) What structures do the solid forms of the elements sodium, silicon and sulphur adopt under ambient conditions (i.e. standard temperature and pressure)? How are the structures and electrical conductivities of these
elements related to their first ionisation energies?
a) Explain what is meant by the term ionisation energy.
b) The table below gives the values of the first ionisation energies for selected elements. Comment on and interpret the variations evident in these data.
Element 1 t ionisation Energy (kJ mol-1)
Na 494
Mg 736
AI 577
Si 786
P 1060
S 1000
C) What structures do the solid forms of the elements sodium, silicon and sulphur adopt under ambient conditions (i.e. standard temperature and pressure)? How are the structures and electrical conductivities of these
elements related to their first ionisation energies?
Inorganic Chemistry
a) Explain briefly why ligand exchange reactions of Cr(III) are typically very slow.
b) Which of the two manganese complexes shown below will have the greatest value of Ao Give an explanation for your conclusion.
[Mn(H2O )6]2+, [Mn(CN)6]4-
c) Draw d-orbital splitting diagrams of each electronic configuration for which both high- and low-spin possibilities exist for octahedral transition metal complexes. In such cases, which factors determine whether an
octahedral metal complex adopts a high- or a low-spin d-electron configuration?
b) Which of the two manganese complexes shown below will have the greatest value of Ao Give an explanation for your conclusion.
[Mn(H2O )6]2+, [Mn(CN)6]4-
c) Draw d-orbital splitting diagrams of each electronic configuration for which both high- and low-spin possibilities exist for octahedral transition metal complexes. In such cases, which factors determine whether an
octahedral metal complex adopts a high- or a low-spin d-electron configuration?
Inorganic Chemistry
Discuss the reducing and oxidising properties of h2o2
Inorganic Chemistry
I'm wondering if you mix (50/50) 3%hydrogen peroxide at room temperature with 1% zinc acetate will the components react or will the combination remain as stable separate components simply diluted?
Inorganic Chemistry
Can we change limiting reactant in chemical reaction to increase the amount of required product?
Like if zinc nitrate hexahydrate (15.0 g) reacts with sodium hydroxide (16.0 g) to produce zinc oxide (which was just 4.0 g), then can we change the amount of reactants in such a way so that the amount of zinc oxide produced is more?
Like if zinc nitrate hexahydrate (15.0 g) reacts with sodium hydroxide (16.0 g) to produce zinc oxide (which was just 4.0 g), then can we change the amount of reactants in such a way so that the amount of zinc oxide produced is more?
Inorganic Chemistry
a) The rate constant of for the exchange of a single water molecule in the complex [Cu(H2O)s] 2+ is one of the fastest known for a metal complex. Explain why it is so fast.
b) Determine the magnitude of the crystal field stabilisation energy in terms of for the following complexes:
[Cr(H2O)6) 3 +, [Mn(CO)6]+
c) Describe briefly what is meant by the terms n-donating and rr-accepting,
and provide one example of each. sj
d) Select the combinations of metal ion and ligand from the following list that will form the most stable complexes, and explain your choice.
Metal ions: Ag+, r3+
Ligands: EtS—, NH3
2. Answer ALL parts a) — c).
b) Determine the magnitude of the crystal field stabilisation energy in terms of for the following complexes:
[Cr(H2O)6) 3 +, [Mn(CO)6]+
c) Describe briefly what is meant by the terms n-donating and rr-accepting,
and provide one example of each. sj
d) Select the combinations of metal ion and ligand from the following list that will form the most stable complexes, and explain your choice.
Metal ions: Ag+, r3+
Ligands: EtS—, NH3
2. Answer ALL parts a) — c).
Inorganic Chemistry
a) The rate constant of for the exchange of a single water molecule in the complex [Cu(H2O)s] 2+ is one of the fastest known for a metal complex. Explain why it is so fast.
b) Determine the magnitude of the crystal field stabilisation energy in terms of for the following complexes:
[Cr(H2O)6) 3 +, [Mn(CO)6]+
c) Describe briefly what is meant by the terms n-donating and rr-accepting,
and provide one example of each. sj
d) Select the combinations of metal ion and ligand from the following list that will form the most stable complexes, and explain your choice.
Metal ions: Ag+, r3+
Ligands: EtS—, NH3
b) Determine the magnitude of the crystal field stabilisation energy in terms of for the following complexes:
[Cr(H2O)6) 3 +, [Mn(CO)6]+
c) Describe briefly what is meant by the terms n-donating and rr-accepting,
and provide one example of each. sj
d) Select the combinations of metal ion and ligand from the following list that will form the most stable complexes, and explain your choice.
Metal ions: Ag+, r3+
Ligands: EtS—, NH3
Inorganic Chemistry
Answer ALL parts a) — c).
a) Draw the structure of the following coordination compounds and determine the oxidation state, dn electronic configuration,t2gm egn or emt2n configuration and the spin only magnetic moment (Us.o.) of the metal ion.
i. [Co(NH3)6]2+
ii. [Cu(en)3]2+, en = 1,2-diaminoethane
iii. [NiCl4]2-
a) Draw the structure of the following coordination compounds and determine the oxidation state, dn electronic configuration,t2gm egn or emt2n configuration and the spin only magnetic moment (Us.o.) of the metal ion.
i. [Co(NH3)6]2+
ii. [Cu(en)3]2+, en = 1,2-diaminoethane
iii. [NiCl4]2-
Inorganic Chemistry
determine the wavelengh for a transition from the v=0 to the v=1 level .is this tranistion in the ir region of the electromagnetic spectrum?
Inorganic Chemistry
Answer ALL parts a) — c).
a) Draw the structure of the following coordination compounds and determine the oxidation state, dn electronic configuration,t2gm egn or emt2n configuration and the spin only magnetic moment (Us.o.) of the metal ion.
i. [Co(NH3)6]2+
ii. [Cu(en)3]2+, en = 1,2-diaminoethane
iii. [NiCl4]2-
B)Use the Bohr model of the hydrogen atom to explain atomic emission spectra. Your answer should include appropriate diagrams
A sample of sodium gas is excited using an electrical discharge, which
causes it to emit light at 589 nm. Calculate the energy of the transition. [2] [Planck constant, h -- 6.626 • 10—3 4 J s; speed of light, c = 3 • 10a ms—1J
E=hc/λ= (6.626×10−34Js)(3×108ms−1)/589X10-9m
a) Draw the structure of the following coordination compounds and determine the oxidation state, dn electronic configuration,t2gm egn or emt2n configuration and the spin only magnetic moment (Us.o.) of the metal ion.
i. [Co(NH3)6]2+
ii. [Cu(en)3]2+, en = 1,2-diaminoethane
iii. [NiCl4]2-
B)Use the Bohr model of the hydrogen atom to explain atomic emission spectra. Your answer should include appropriate diagrams
A sample of sodium gas is excited using an electrical discharge, which
causes it to emit light at 589 nm. Calculate the energy of the transition. [2] [Planck constant, h -- 6.626 • 10—3 4 J s; speed of light, c = 3 • 10a ms—1J
E=hc/λ= (6.626×10−34Js)(3×108ms−1)/589X10-9m
