Font Paragraph Styles 1. Fully describe principles that guide electron accommodation in molecular orbitals. (6) 2. Write the Lewis structure for the following chemical species (10) (a) CO32- (b) NO3- (c) XeF6 (d) ICZ (e) PO43 3. Give the noble gas electronic configuration of the following (10) (a) P14+ (b) Y4+ (c) C03+ (d) Hf4- (e) Cu2+ 4. Describe the stability of a chemical substance in terms of (a) resonance (b) energy (f) geometry (c) bonding (d) 18-e rule (e) electron repulsion (12) 5 What does the electronic configuration of an element tell us about its stability, reactivity and physical properties (10) 6. (a) Fully explain each limitation of valence shell electron pair repulsion theory(VSEPR) (8) (10) (b) Draw fully labeled molecular diagram for Cla (C) CH4 NH, and He show same hybridization but different geometries Explain. 7. Describe factors that contribute to the stability of He molecule during its bond formation (8)
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Chemistry, 22.06.2019 01:20, whrjegt4jrnfdvj
1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.
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Chemistry, 22.06.2019 16:10, sierram298
Amixture initially contains a, b, and c in the following concentrations: [a] = 0.300 m , [b] = 1.05 m , and [c] = 0.550 m . the following reaction occurs and equilibrium is established: a+2b⇌c at equilibrium, [a] = 0.140 m and [c] = 0.710 m . calculate the value of the equilibrium constant, kc.
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Chemistry, 22.06.2019 22:30, lanashanabJHsbd1099
Who discovered a pattern to the elements in 1869?
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Chemistry, 23.06.2019 08:40, mathisaqeosmw
Calculate the number of grams of sodium in 3.00 g of each sodium-containing food additive.
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