Match the following atomic model with sicentists

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Presentation transcript:

You have learned how to write electron configuration… Let’s learn exactly what they represent!

Match the following atomic model with sicentists Bohr Thomson Dalton Rutherford

John Dalton Atom=solid indivisible mass

J.J. Thomson Plum-pudding model Negatively charged electrons stuck into a lump of positively charged material Explain about electrical properties of atom

Ernest rutherford Most of atom’s mass is concentrated in a small positively charged region called nucleus But doesn’t explain why atom doesn’t collapse

Niels Bohr Electrons travel in definite orbits around the nucleus Energy level; region around the nucleus where the electron is likely moving Quantum =amt of energy required to move an electro from its present energy level to the next higher one Higher energy level>>more energetic

Quantum Mechanical Model-Schrodinger Doesn’t define exact path an e- takes place Energy level=principal quantum numbers (n) Estimates the probability of finding an electron in certain position Thicker the cloud>>more likely to find e-

Principal quantum number =energy level N=1,2,3….. N increase>>farther from nucleus Within each principal energy level, the e- occupy …

Energy sublevels Principal Energy Levels Number of sublevels Sublevels 1 S N=2 2 S,P N=3 3 S,P,D N=4 4 S,P,D,F

Atomic orbitals Different shape of electron cloud where you are more likely to find http://www.youtube.com/watch?v=VfBcfYR1VQo How many orbital are in the 2nd energy level? How many e- in 3rd energy level? Type of sublevel Number of orbitals S 1 P 3 D 5 f 7

For the rest of the class Let’s practice more on electron configuration! Electron configuration battleship wkst