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What are the building blocks?  Carbon  Hydrogen  Oxygen  Nitrogen  Phosphorus  Chlorine Atoms  Methane  Formaldehyde  Hydrogen cyanide  Phosphorus.

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Presentation on theme: "What are the building blocks?  Carbon  Hydrogen  Oxygen  Nitrogen  Phosphorus  Chlorine Atoms  Methane  Formaldehyde  Hydrogen cyanide  Phosphorus."— Presentation transcript:

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3 What are the building blocks?  Carbon  Hydrogen  Oxygen  Nitrogen  Phosphorus  Chlorine Atoms  Methane  Formaldehyde  Hydrogen cyanide  Phosphorus pentachloride Molecules Subatomic particles  Protons  Electrons s orbital p orbital d orbital Hybrids

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6 The forces at work are: Electromagnetic: Repulsion of like charges: proton-proton and electron-electron Attraction of unlike charges: proton-electron. Magnetic: Electron spin introduces magnetic forces. Electrons with opposite spins produce opposite magnetic poles. Opposite magnetic poles attract. Opposite spin is required for electrons to occupy the same orbital.

7 The Energies involved: Electron (orbital) Potential Energy: 2s 2p 3s 3p 3d 4s 4p 1s ENERGY LEVEL

8 120 o o 90 o 180 o Bond Angles

9 PxPx PyPy PzPz PxPx PyPy PzPz

10 Methane building blocks

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12 2s2p x 2p z 2p y 1s sp 3 sp o Promote Hybridize x z y Methane: Carbon

13 CH 2 O 120 o

14 2s2p x 2p z 2p y 1s sp 2 sp 2 sp o Hybridized Formaldehyde: Carbon Promoted 120 o Trigonal Planar 2s + 2p x + 2p z

15 2s2p x 2p z 2p y 1s sp 2 sp 2 sp o Hybridized Formaldehyde: Oxygen 120 o Trigonal Planar Lone Pairs 2s + 2p x + 2p z

16 Formaldehyde Sigma bond  bond

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18 2s2p x 2p z 2p y 1s sp Promoted Hybridized Hydrogen Cyanide: Carbon 2s + 2p x Linear

19 2s2p x 2p z 2p y 1s sp Hybridized Hydrogen Cyanide: Nitrogen 2s + 2p x Linear

20  bond

21 PCl 5

22 3s3p x 3p z 3p y 2 Neon 120 o Hybridized Phosphorus Pentachloride: Phosphorus Trigonal Bipyrimidal sp 3 d sp 3 d sp 3 d sp 3 d sp 3 d d xz d yz d xy d x 2 -y 2 d z o 90 o Promoted

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