( 2 pts) Nondisjunction is the phenomenon where chromosomes fail to se.docx
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( 2 pts) Nondisjunction is the phenomenon where chromosomes fail to separate (disjoin) and move to opposite poles of the cell. The result is loss or gain of a chromosome. Nondisjunction can occur in either meiosis I or meiosis II. People with the chromosome constitution 47, XXY are phenotypically male. A female with normal blood clotting whose father had hemophilia has a son with a male who has normal blood clotting. The son is XXY and has hemophilia. (a) In which parent did the nondisjunction occur? (b) In which cell division in meiosis did the nondisjunction occur? .
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Solution
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electron geometry =tetrahedral (4 lone pains in sp3 orbitals)
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SF6
electron geometry = octahedral (6 , S-F bonds)
molecular geometry = octahedral (sp3d2 Hybridization)
hybridization = none of the above (sp3d2)
inter molecular forces = London\'s Dispersion (SF6 has non-polar structure due to symmetry and bonds, so only possibility is London Dispersion interactions)
BrF3
electron geometry = trigonal pyramidal (3 Br -F bonds, 2 lone pairs)
molecular geometry = T-shape (due to asymmetric charge distribution about the central atom)
hybridization = none of the above (sp3d)
inter molecular forces = dipole-dipole interactions because of the T-shape, BrF3 is polar.
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molecular geometry = linear (sp hybridization, one orbital occupied by electron from H, other with lone pair, so linear)
hybridization = sp
intermolecular forces = hydrogen bonding (due to the presence of d+ charge H atom due to the electronegativity of F, strong H bonding takes place F…..H-F)
SF6
electron geometry = octahedral (6 , S-F bonds)
molecular geometry = octahedral (sp3d2 Hybridization)
hybridization = none of the above (sp3d2)
inter molecular forces = London\'s Dispersion (SF6 has non-polar structure due to symmetry and bonds, so only possibility is London Dispersion interactions)
BrF3
electron geometry = trigonal pyramidal (3 Br -F bonds, 2 lone pairs)
molecular geometry = T-shape (due to asymmetric charge distribution about the central atom)
hybridization = none of the above (sp3d)
inter molecular forces = dipole-dipole interactions because of the T-shape, BrF3 is polar.
.
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