THE PERIODIC TABLE’S ENDANGERED ELEMENTS
E57-71
E89-103
H1
Hydrogen
Li3
Lithium
Na11
Sodium
K19
Potassium
Rb37
Rubidium
Cs55
Caesium
Fr87
Francium
Be4
Beryllium
Mg12
Magnesium
Ca20
Calcium
Sr38
Strontium
Ba56
Barium
Ra88
Radium
Sc21
Scandium
Y39
Yttrium
La57
Lanthanum
Ac89
Actinium
Ti22
Titanium
Zr40
Zirconium
Hf72
Hafnium
Rf104
Rutherfordium
Ce58
Cerium
Th90
ThoriumPa
91
Protactinium
Pr59
PraseodymiumNd
60
Neodymium
U92
Uranium
Pm61
Prometheum
Np93
Neptunium
Sm62
Samarium
Pu94
PlutoniumAm
95
Americium
Eu63
EuropiumGd
64
Gadolinium
Cm96
Curium
Tb65
Terbium
Bk97
Berkelium
Dy66
Dysprosium
Cf98
Californium
Ho67
Holmium
Es99
Einsteinium
Er68
Erbium
Fm100
Fermium
Tm69
Thulium
Md101
Mendelevium
Yb70
Ytterbium
No102
Nobelium
Lu71
Lutetium
Lr103
Lawrencium
V23
Vanadium
Nb41
Niobium
Ta73
Tantalum
Db105
Dubnium
Cr24
Chromium
Mo42
Molybdenum
W74
Tungsten
Sg106
SeaborgiumBh
107
Bohrium
Re75
Rhenium
Tc43
Technetium
Mn25
ManganeseFe
26
Iron
Ru44
Ruthenium
Os76
Osmium
Hs108
Hassium
Co27
Cobalt
Rh45
Rhodium
Ir77
Iridium
Mt109
MeitneriumDs
110
Darmstadtium
Pt78
Platinum
Pd46
Palladium
Ni28
NickelCu
29
Copper
Ag47
Silver
Au79
Gold
Rg111
RoentgeniumCn
112
Copernicum
Hg80
Mercury
Cd48
Cadmium
Zn30
Zinc
B5
Boron
Al13
Aluminium
Ga31
Gallium
In49
Indium
Tl81
Thallium
Nh113
Nihonium
C6
Carbon
Si14
Silicon
Ge32
Germanium
Sn50
Tin
Pb82
Lead
Fl114
Flerovium
N7
Nitrogen
P15
Phosphorus
As33
Arsenic
Sb51
Antimony
Bi83
Bismuth
Mc115
MoscoviumLv
116
Livermorium
Po84
Polonium
Te52
Tellurium
Se34
Selenium
S16
Sulfur
O8
OxygenF
9
Fluorine
Cl17
Chlorine
Br35
Bromine
I53
Iodine
At85
Astatine
Ts117
TennessineOg
118
Oganesson
Rn86
Radon
Xe54
Xenon
Kr36
Krypton
Ar18
Argon
Ne10
Neon
He2
helium
COLOR BY NUMBERS
22
2 2 2
LIMITED AVAILABILITY – FUTURE RISK TO SUPPLYCOLOR THESE ELEMENTS YELLOW
RISING THREAT FROM INCREASED USECOLOR THESE ELEMENTS ORANGE
SERIOUS THREAT IN THE NEXT 100 YEARSCOLOR THESE ELEMENTS RED
1
2
3
FIND OUT HOW ENDANGEREDEACH ELEMENT IS BY COLORINGIN THE ELEMENT BASED ON THENUMBERS 1, 2, AND 3IN THE BOTTOM OF THE CIRCLE.
DIRECTIONS
2
1
1
1
1 1 1 1 1 1 1
1
1
1
1 1
1 1111
1111111
123
3
3 3 3 3
3 3
3
Learn about the endangered elements at www.acs.org/endangered-elements.