The Lewis formulas of a dinitrogen pentoxide molecule are similar to those of a

The lewis formulas of a dinitrogen pentoxide molecule

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The Lewis formulas of a dinitrogen pentoxide molecule are similar to those of a dinitrogen tetroxide molecule, but with a central oxygen atom Their superposition is e • • -9~0 . . (±) ;,q: N-0-N:-... / .. ~ :o. ~a· e 7-64. The Lewis formulas of the thiosulfate ion are .. e . s. • • I .. O=S=O • • I .. ·o· . ·e . s . . . II .. e o=s-o: • • I • • ·o· .. e . s . e.. I •• :O-S=O • • 11 •• . o·
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58 Student Solutions Manual to Accompany General Chemistry Their superposition is s 2- O==S==O 0 Each of the sulfur-oxygen bonds in the thiosulfate ion are equivalent; they have the same length and the same bond energy.
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cHAPTER a. Predictions of Molecular Geometries MOLECULES AND IONS INVOLVING ONLY SINGLE BONDS 8-2. (a) An NHt ion has (1 x 5) + (4 x 1) = 10 valence electrons. Its Lewis formula is H I ® H-N-H I H NHt is an A)4 tetrahedral molecule (see Table 8.2) and thus has no goo bond angles. (b) A PF 5 molecule has 40 valence electrons. Its Lewis formula is . F. • • • : .F.-- ...... I •.. . '/P- F. : F I •• . • . F . PF 5 is an AX.5 trigonal bi pyramidal molecule and thus has some goo bond angles. ( c) An AIF!- ion has 48 valence electrons. Its Lewis formula is • • . F. • • • • :F l'P F: • •""'-'9---· . ·/Al""- .. :F I F: . . . F. . . • • 3- AIF 6 is an AX.6 octahedral molecule and thus has goo bond angles. ( d) A SiC1 4 molecule has 32 valence electrons. Its Lewis formula is • • :c1: • • I •• :Cl-Si-Cl: • • I •• :c1: • • SiCl4 is an A)4 tetrahedral molecule and thus has no goo bond angles. 59
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60 Student Solutions Manual to Accompany General Chemistry 8-4. (a) SeF 6 is an AX. 6 octahedral molecule and thus has 180° bond angles. (b) BrF 2 is an AX2E3 linear molecule and thus has a 180° bond angle. (c) SC1 2 is an AX. 2 E 2 bent molecule and thus has no 180° bond angles. (d) SiBr 4 is an~ tetrahedral molecule and thus has no 180° bond angles. 8-6. See Table 8.2 . .. e (a) H-N-H AX2E2 bent •• ® • • (b) :f.-P-f.: AX2E bent ® • • (c) : F- I - F: AX2E2 bent . . . .e .. (d) :Br-Br-Br: AX2E3 • • • • 8-8. See Table 8.2 . • • (a) H-N-H I :c1: •• • • . F. • I .. (b) : Cl- F: . I .. . F. •• • • ( c) : F - P- F: AX.3E (d) . • I .• . F. . F. I .. .,.8, .. :F,..,. "F: 8-10. See Table 8.2. :13~ e 8°r: ( a) .. "--.. / .. ••/1, .. :sr · · Br: • • • • :c1: (b) . • I® .• :c1-P-c1: I :c1: . F. (c) . . le .. :F-8-F: I . F. • • . F. . F I (d) ................ (±) . •/ 1. : F I . F. • • AX.4 AX.4 AX.4E linear trigonal pyramidal T-shaped trigonal pyramidal trigonal planar square planar tetrahedral tetrahedral seesaw-shaped
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Chapter 8: Predictions of Molecular Geometries 61 8-12. We have for the given fluorides •• . F.
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