11/22 deca

deca=10
decafs
decagon
decahedra
decadent
decare
decarboxylation

11/21 Nona

nona=9
cannonade
nona
nonacid
nonachievements
nonabstract

11/18 octo

octo=8
octodecillion
octogon
proctor
rhizoctonia
proctorships

11/17 hept

hept=seven
heptad
heptagon
heptane
heptose
heptarchies
cyproheptadine

11/16 hex

hex=six
hexagon
hexadecimal
hexades
hexagrams
hexaminidases

11/15 penta

penta=five
pentagon
pentachlorophenols
pentacle
pentane
pentangle

11/14 tetra

tetra=four
tetracaine
tretrachloride
tretrachord
tretragons

11/11 tri

tri=three
abstict
airstrike
triangle
tribal
tribe
triarchy

11/10 di

di=two
abdicable
abiding
absurdists
accidia
diffuses
diffusional

11/9 mono

mono=one
ammono
monoacid
monoculture
monodies
monodramas
monotheists
phosphomonoesterase

11/8 10 20

neon
10
Ne













Calcium
Ca
20

11/7 fluorine, potassium

fluorine
F
9











potassium
K
19

oxygen, ar

oxygen
O
8










argon
AR
18

11/2/11 carbon s

carbon
c
6











sulfur
s
16