since Paling and also not setric. SP How many "central" atoms are part of methanol (CH,OH)? What are the molecular geometries of each central atom? 2 Centro otorns (14)+6+4= 2-8-4 5. 4. C/ G: tetra taure O EG tetrala B: 2 MG bent NB: 2 4 How many "central" atoms are part of ethylene glycol (HOCH₂CH₂OH), a component of antifreeze? What are the molecular geometries of each central atom? Is the molecule polar or nonpolar? Why? (Note: the modeling kits technically only contain one carbon and one oxygen via color coding, however, in this example, other spheres can be used to represent these elements within this molecule ... why?) 1 (1 x 6 ) + ( 2 x 6 ) + ( 4 x 2) == (2x6)+(4xz). 6 12 :8

Draw a Lewis structure for the C4Hg molecule usıng the connectivity shown in the spacefillıng model in the window. Gray = C; white = H; red = 0; blue = N; dark green = Cl; brown = Br; light green = F; purple = I; yellow = S; orange = P. %3D Use your drawing to answer the following questions. The total number of electrons in C-H bonds = The number of C-C single bonds =| The number of C=C double bonds = Previous Next The total number of unshared pairs %3D

geNSUINortheastern St Content OWLv2 LOnline teachina. Chomistry Questions& A. A Shert Danor: Alcohol/Foc O X Screenshot 2020-11-15 at 11.09... O O Q Q OC [References] A compound, XF4, is 39.03% fluorine by mass. Identify the element X. Scien Ch What is the molecular structure of XF4? trigonal pyramid Try Another Version 3 item attempts remaining Ch square pyramid Ch ahedron Ch trigonal bipyramid linear tetrahedron bent Ch plane triangle Ch Ch acy - Terms Ch 11:10

5)uhich Aom or ion ineach of following pairs has a Lorger radius ? 27 B) Cazt or Ba?t or Al3

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Attractive Energy EA and repulsive Energy ER for Na+ and Cl- is dependent on distance r between 1,436 ions and: EA== 1 ER = 7,32.10-6 7-8 -Calculate equilibrium spacing, To and bonding energy Eo.

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The molecular orbital diagram of NO shown in Figure 10.47 also applies to the following species. Write the molecular orbital electron configuration of each, indicating the bond order and the number of unpaired electrons. (a) LiBe+ (b) CO+ (c) CN (d) OF Figure 10.47 Molecular orbital diagram for nitric oxide (NO). The molecular orbital diagram for NO predicts a bond order of 2.5 and predicts that the molecule is paramagnetic with one unpaired electron. These predictions are verified by experimental measurements.

Compare the electron density in the 1g and 1u* molecular orbitals for H2+ shown in Figure 6.5 with the classical model for bonding for H2+ summarized in Figure 3.22b. Which of these molecular orbitals describes the bond in H2+ ?

Discuss the nature of the bonding in the nitrate ion (NO3) . Draw the possible Lewis resonance diagrams for this ion. Use the VSEPR theory to determine the steric number, the hybridization of the central N atom, and the geometry of the ion. Show how the use of resonance structures can be avoided by introducing a de-localized MO. What bond order is predicted by the MO model for the NO bonds in the nitrate ion?