Chem - Electron subshells, orbitials, shells

order from largest to smallest

energy shell, subshell, orbitial, then electrons

list energy shells and amount of e in each

n=1 (2 max), n=2 (8 max), n=3 (18 max)

list the subshells

s, p, d, f

how many subshells can 3 shell hold

s, p, d

orbitals can hold up to

2 electrons in each max w opposite spins

how many orbitals are in each subshell?

s=1, p=3, d=5, f=7

how many e are in each subshell

s=2, p=6, d=10, f=14

how many orbitals can be in each subshell

s=1, p=3. d=5, f=7

what is an orbital

An orbital is a region of space where an electron is likely found

Shapes of orbitals

s=sphere, p=dumbbell

key rule of electron configration

$s fills before 3d

Aufbau principle

lowest energy orbitial is filled first

xoxo

xoxo

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Exceptions to Know

Chronium is [Ar] 4s^1 3d^5

Copper is [Ar] 4s^1 3d^10

s-block in periodic table

Groups 1–2

p blocks

groups 3-0

d blocks

transition metals

Why does 4s fill before 3d

bc its a little less in energy