Question

5. The correct designation of the bonds which links the CH to the CH, in CH=CH-CH, is: (a) sp'-sp' sigma (b) sp-sp' sigma (c) sp-sp' sigma, p-p pi (d) sp -sp.sigma, p-p pi (e) sp-sp'pi. p-p sigma (1) sp-sp' pi 6. Write the hybridization state (sp. sp', spl) beside each of the indicated atoms. ALL atoms and lone pair electrons are shown. D Η-ΝΗ H H HC . 0 + C- C " | Н Н 0. Е 7. State the approximate bond angle around atoms A-E for the molecule in problem #3. All atoms and lone pairs on the indicated atoms are shown. A: B: C b: E: 8. How many sigma (0) and pi (n) bonds are in a H-CC-CH3 molecule? HỮc=Các The number of o bonds = _ The number of rt bonds = 9. The correct designation of the bonds which links the two carbon atoms in CH=CH2 is: (a) sp-sp' sigma (b) sp -spsigma (c) sp-sp.sigma, p-p pi (d) sp -sp-sigma, p-p pi (e) sp'-sp'pi, p-p sigma 10. Draw TWO resonance structures of the following molecule. All atoms and electrons have been shown. Your resonance structures must include formal charges. o CN-H

Answer 1

Hybridisation calculation : number of sigma bonds + number of lone pairs (x)

5. hy briclization of 6-2 = No. of bond be Ayo"? A No. of lone fair hybridization of c-3 = 3+0 = sp2 = No. of o-bond No. of lone pair 4 +0 - sp3 Hence ch links to cry sp² a sp² signa bond. in * Hybridisation calculation No. of o bond Not of some pair Heron disation CSP) Also ya ere's / sw sp2 No. of No. of o-bonds = 6 a hands=2 CH2=CH₂ E Eco Spe-sp2 signa N - 1

X: 2(sp) , 3(sp2), 4(sp3)

*Note:

1. Single bond has only 1 sigma bond

2. Double bond has 1 sigma bond and 1 pi- bond.

3. Triple bond has 1 sigma bond and 2 pi- bond.