CHEM 101 notes Monday March 1st

CHEM 101 notes Monday March 1st - o Solution – a series...

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Chemistry Test Monday Bohr’s model- allowed energies E n = -Rhc/(n 2 ) *3x10 8 m/s = speed of light 1.097x10 7 m -1 - ryndburg constant E f -E i = -N A -Rhc((1/n 2 f) -(1/n 2 i )) Avogadro’s number= -6.022x10 23 (1.09x10 7 m -1 )(6.626x10 -34 J*s)(3x10 8 m/s)((1/4)- (1/9)) -(5.448x10 -19 J/atom)(6.022x10 23 atoms/mol) E= -182.3 kJ/mol *Planks constant= 6.626x10 -34 J*s *Avogadro’s number 6.022x10 23 E=hc/lamda E=planks constant *frequency Velocity = wavelength*frequency Lambda= (6.626x10 -34 J*s)(3x10 8 m/s)/? His light notes are confusing use my high school textbook for better understanding * need to memorize for test Light as a wave- de Broglie Light E=mc 2 De Broglie wavelength -- Lamda= h/mv Heisenburg Uncertainty principle- the momentum and the position of an election cannot be simultaneously determined (probability but not defined) Schrodenger- e- behaved as a wave – wave equations and functions- describe energy states of electrons
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o Depend on function of distance and 2 angles o Orbital- the region of space within which an electron is found
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Unformatted text preview: o Solution – a series of wave functions with corresponding energies o Need quantum numbers o n, l, m l o Principle quantum number n- defines the energy level of the orbital (n=1, 2, 3, …) o Azimuthal Quantum Number l- defines the shape of the orbital (l=0,1,2,3,…n-1; l=0 s, l=1 p,l=2 d) o Magnetic Quantum Number m l – defines the orientation of the orbital (m l = -l,.,-2,-1,0,1,2,…) o n o l o m l o orbitals o 1 o o o S-orbital o 1s o 2 o o o 2s o o 1 o-1,0,1 o 2p o 3 o o 3s o o 1 o-1…1 3p o o 2 o-2…2 3d o 4 o o 4s o o 1 o-1. .1 4p o o 2 o-2…2 4d o o 3 o-3…3 4f • Look at misconceptions • Node- position where there is no electron density • M s- describes electron spin (-1/2 or +1/2) • Define electron need the four quantum numbers • For each orbital can have 2 e-• Pauli exclusion principle- no two electrons in the same atom can have the same 4 quantum numbers...
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CHEM 101 notes Monday March 1st - o Solution – a series...

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