11/22 Deca=ten

Deca= ten
decaf
decal
decamp
decanal
decant
decanter
decagram
decade
decay
decagon

11/21 Nona= nine

Nona= nine
nonacid
nonacidic
nonaccural
nonacting
nonaction
nonactions
nonacids
nonage
nonages
nonault
nonaults

11/18 Octo= eight

Octo= eight
octogon
octopus
october
octonary
octopi
octofid
octoflied
octoroon
octoroons
octopusher
octopushers

11/17 hept= seven

hept= seven
heptagon
heptameter
heptathlon
heptad
heptacholr
heptacholrs
heptachord
heptachords
heptach
heptarchist

11/16 hex= six

hex= six
hexad
hexagon
hexagons
hexagram
hexagrams
hexadic
hexacords
hexacord

11/15 penta= five

penta= five
pentacle
pentac
pentacs
pentad
pentalogy
pentalpha
pentalphs
pentagrams
pentagram
pentagon
pentameries

11/14 tetra= four

tetra= four
tetracaine
tetracaines
tetrachloride
tetrachlorides
tetrachord
tetrachords
tetrads
tetraadic

11/11 tri=three

tri=three
triable
triacs
triacid
trial
trials
triad
triadics
triages
triaging
trilouge
triangle

11/10 di=two

di=two
diabase
diabases
dibasic
diblery
diabolic
diabolical
diabolist
diabolists
diabolize

11/9 mono=one

mono=one
monoacid
monoacidic
monoacids
monocarp
monohord
monohords
monochromat
monochasia
monochromats

11/8 10,20

Neon Ne 10

Calcium Ca 20

11/7 fluorine, potassium

Fluorine

Potassium K 19

11/4 Oxygen, Argon

Oxygen O 8

Argon Ar 18

11/3 Nitrogen, Chlorine

Nitrogen N 7

Chlorine  CI 17

11/2 Carbon, Sulfur

Carbon C 6

Sulfur S 16

11/1 Boron, phoshorous

Boron B 5

Phoshorous P 15