16 Arrangement of Electrons (pt. 2) Flashcards
orbitals occupied by electrons, represented by arrows in boxes
quantum numbers
describes orbital occupied by electrons: distance from nucleus, shape, position, and spin
quantum numbers
main energy lvl of e- or how DISTANT it is from the nucleus
principal quantum number
symbolized by “n”
principal quantum number
also known as “angular momentum”
azimuthal quantum number
shape/sub lvl (subshell) orbital occupied by electron
azimuthal quantum number
symbolized by “l”
azimuthal quantum number
2(n)^2 (QN)
principal quantum number
spdf (QN)
azimuthal quantum number
electron’s position and orbital
magnetic quantum number
symbolized by “mₗ”
magnetic quantum number
1357 [spdf positions] QN
magnetic quantum number
electron’s spin in orbital
spin quantum number
symbolized by “mₛ”
spin quantum number
↑ counter-clockwise +1/2
↓ clockwise -1/2
spin quantum number
always starts with ↑; fill all boxes first; once all are filled, fill in rest with ↓
spin quantum number
electrons in orbitals rep by arrows in boxes
orbital notation
each box is labelled with electron config equivalent to the orbital
orbital notation
atomic orbitals are filled with electrons in order of increasing energy, starting from the lowest
aufbau principle
electrons must occupy available atomic orbitals singly first, before pairing and with parallel spins
hund’s rule
two electrons can occupy same orbital, ONLY IF they have opposite spins so their magnetic fields of force attract each other
pauli exclusion principle
