Elemental Patterns
How well do you know your elements? Celebrate the International Year of the Periodic
Table of Chemical Elements (acs.org/IYPT) by using the patterns below to determine
which elements are missing.
Puzzle I
Fill in the
answer!
Puzzle II
Set A
Al
B
Ga
In
Nh
Set A
Fe
Ni
Co
Cu
Zn
Set B
C
Fl
Ge
Pb
Si
Set B
Cl
K
Ar
Ca
Sc
Set C
Sb
As
Bi
Mc
N
Set C
Au
Hg
Tl
Pb
Bi
Set D
Lv
O
Po
Se
Set D
In
Sn
Sb
I
Puzzle III
Set A
6
Set B
2
1
Ga
9
Set C
9
2
I
7
2
Set D
8
1
4
9
1
2
Al
6
6
Mega-challenge Need a hint for the mega-challenge? Look at the bottom of the page.
Set A
Set B
H
B
He
S
F
Be
Tb
Li
Li
Set D
B
H
Li
B
He
Be
Sn
Be
H
inchemistry.acs.org
Find the answers to these puzzles on the iC website.
Hint: Look at the atomic numbers of the elements.
H
Set C