Chem flashcards for UNM 121 Exam 3 review test
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| show | Hund's rule
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| Give the set of four quantum numbers that could represent the last electron added to the Ne atom. n=3,l=2,ml=1,ms=- 1/2 n=3,l=0,ml=1,ms=- 1/2 n = 2, l = 1, ml = 1, ms = - 1/2 n = 3, l = 2, ml =1 , ms = + 1/2 n = 3, l = 1, ml = 1, ms = + 1 | show 🗑
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| True/False: An orbital that penetrates into the region occupied by core electrons is less shielded from nuclear charge than an orbital that does not penetrate and therefore has a lower energy. | show 🗑
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| show | [Ar]3d^104s^24p^6
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| How many unpaired electrons are present in the ground state S atom? | show 🗑
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| How many valence electrons does an atom of Ba possess? | show 🗑
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| Place the following elements in order of decreasing atomic radius. Xe, Rb, Ar | show 🗑
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| Place the following elements in order of increasing atomic radius. Ca^2+, S^2-, Cl^- | show 🗑
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| Which of the following represent the Lewis structure for Ca^2+? | show 🗑
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| show | KBr
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| Choose the compound below that should have the highest melting point according to the ionic bonding model. SrI_2, SrF_2, CaCl_2, SrBr_2, MgF_2 | show 🗑
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| show | Single covalent bond.
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| show | Cl > S > Se
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| Choose the bond below that is most polar. H-Cl, H-F, H-Br, H-I, C-H | show 🗑
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| show | 34
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| show | 109.5 degrees
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| Determine the electron geometry and then the molecular geometry of PF_5. | show 🗑
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| show | trigonal bipyramidal and linear
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| Determine the electron geometry, molecular geometry and polarity of SF_6. | show 🗑
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| Identify the number of electron group around a molecule with sp hybridization. | show 🗑
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| show | side by side overlap of p orbitals.
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| How many of the following molecules have sp^3d hybridization on the central atom? SiCl_4, BrF_5, AsF_5, BrF_3 | show 🗑
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