A. The Lewis diagram for NF3 E—N—F: 2—6: F: is: The electron-pair geometry around the N atom in NF3 is There are atom, so the geometry of NF3 is lone pair(s) around the central

Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure :: : Cl - : 0: :0: :Z: C. C= : Z: N N Cl: Is the proposed Lewis structure reasonable? Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* 0 Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* * If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "0,0". X 5

To answer the questions, interpret the following Lewis diagram for NO,CI. :0-N=0 :CI: 1. For the central nitrogen atom: The number of lone pairs The number of single bonds %3D The number of double bonds 2. The central nitrogen atom

Valence Shell Bonding Nonbonding Approx. Molecule or Lewis Electron Electron Electron VSEPR Bond Geometric Molecular Ion Structure Pairs Pairs Pairs Formula Angle Shape 1. CH4 H 4 4 AX, 109.5° tetrahedral H:C:H H 1. Complete the table (as outlined above) for the following molecules/molecular ions, all of which obey the Lewis octet rule. Complete those that are assigned by your laboratory instructor. j. SiF, k. H,S 1. NH2