Question

2. Ozone (Oa) has a small dipole moment (0.54 D). How can a molecule with only one kind of atom have a dipole moment? (Be sure to include the Lewis structure and shape of ozone in your answer) ) Which molecule in each of the following pairs is more polar? (a) NHs or PHa b) CBr2F2. (Briefly state why!) CCbF2 or 3. Crystals of dilithium (Liz) are used to power the starship Enterprise. Construct a labeled molecular orbital diagram for Lia and indicate whether you would expect Li; to be a real species Why? 4. Write balanced chemical equations for the reactions indicated. A. Diphosphorus pentoxide reacts with water to make phosphoric acid (HsPO.). B. Glucose (CaHizO) reacts with oxygen to make carbon dioxide and water. C. C. Sodium carbonate reacts with silver (I) acetate to yield silver (I) carbonate and sodium acetate

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Answer 1

3. for Li₂, The total number of electron is 6.

sigma 1S² sigma*1S² sigma 2S²

the bond order will be 1/2(4-2)=1. that means Li₂ exist.

2. a) NH₃ is more polar. because the electronegativity of nitrogen is greater than that of phophorous.

b) CBr₂F₂ is more polar. because the electronegativity difference between Flurine and bromine is higher than Flurine and chlorine.

1. ozone has a bent strucure. due the unequal sharing of valance electrons, ozone has dipole moment.