Chemistry, 11.05.2021 01:20 tgdetwiler2905
The gadolinium 3 ion (Gd3 ) has advantageous magnetic properties for Magnetic Resonance Imaging (MRI) applications, specifically a high number of unpaired electrons. In fact, both neutral Gd and Gd3 have a set of degenerate orbitals with seven unpaired electrons. a) Write the electron configuration for Gd and Gd3 using the condensed noble gas notation. Identify which orbitals lose electrons to yield the 3 cation based on the above information. Explain your reasoning (2-3 sentences). (6 points) b) Curium (Cm) is an actinide element named for Marie Curie. Cm is in the same group as Gd and also forms a 3 cation. Write the electron configuration for Cm and Cm3 . (2 points) c) While 3 is the most common oxidation state for lanthanide elements, some can form 2 ions. Identify an isoelectronic ion to Gd3 that has a 2 oxidation state and indicate which orbitals lose electrons to form that ion. (2 points)
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Chemistry, 22.06.2019 01:30
If 34.2 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 299 kelvin and 1.21 atmospheres? 2 li (s) + 2 h2o (l) yields 2 lioh (aq) + h2 (g)
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Chemistry, 22.06.2019 21:40
Tooth enamel consists mainly of the mineral calcium hydroxyapatite, ca_10(po_4)_6(oh)_2. trace elements in teeth of archaeological specimens provide anthropologist with clues about diet and diseases of ancient people. students at hamline university measured strontium in enamel from extracted wisdom teeth by atomic absorption spectroscopy. solutions with a constant total volume of 10.0 ml contained 0.726 mg of dissolved tooth enamel plus variable concentrations of added sr. added sr find the concentration of sr in the 10 ml sample solution in parts per billion = ng/ml. find the concentration of sr in tooth enamel in parts per million = mu g/g.
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Chemistry, 23.06.2019 02:00
What causes the appearance of lines in a emission spectrum
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The gadolinium 3 ion (Gd3 ) has advantageous magnetic properties for Magnetic Resonance Imaging (MRI...
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