MCAT Chem Ch 1

Discrete bundles called quanta

Weighted average of different isotopes

H=6.626 * 10E-34 J*s

Created by the electrostatic force between the positively charged proton and the negatively charged electron

L=nh/2pi

With respect to principle quantum number

Transfer of an amount of energy exactly equal to the difference between one orbit and another

Ground state

Lyman series

Balmier series

Paschen series

It is impossible to simultaneously determine with perfect accuracy the momentum and the position of an electron

No two electrons in a given atom can possess the same set of four quantum numbers

N;

in each shell, 2n^2 can be held

• L
• fof a given value of n, only n-1 is what l can be

refers to shape and dictates bond angles

Ml

where an electron i most likely to be found at a given moment in time

each orbital can hold a max of two electrons

 Values are -l to +l

Ms

+1/2 to -1/2

Building up principle

electrons fill from lower to higher

Within a given subshell, orbitals are filled such that there a max number of half filled orbitals with parallel spins

Materials composed of atoms with unpaired electrons will quickly orient their spins in alignment with a magnetic field, and the material wI'll thus be weakly attracted to the magnetic field

Materials consisting of atoms that have paired electrons will be slightly repelled by a magnetic field