100
Fermium
Fm
Fermium
Name: Fermium
Symbol: Fm
Atomic Number: 100
Atomic Mass: (257.0) amu
Melting Point: Unknown
Boiling Point: Unknown
What is Fermium?
Radioactive metallic transuranic element, belongs to
the actinoids. Ten known isotopes, most stable is Fm257 with a half-life of 10 days. First identified by Albert
Ghiorso and associates in the debris of the first
hydrogen-bomb explosion in 1952.
101
Mendelevium
Md
Mendelevium
Name: Mendelevium
Symbol: Md
Atomic Number: 101
Atomic Mass: (258.0) amu
Melting Point: Unknown
Boiling Point: Unknown
What is Mendelevium?
Radioactive metallic transuranic element. Belongs to the actinoid series. Only known
isotope, Md-256 has a half-life of 1.3 hours. First identified by Glenn T. Seaborg,
Albert Ghiorso and associates in 1955. Alternative name unnilunium has been
proposed. Named after the 'inventor' of the periodic table, Dmitri Mendeleev.
102
Nobelium
No
Nobelium
Name: Nobelium
Symbol: No
Atomic Number: 102
Atomic Mass: (259.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Link
What is Nobelium?
Radioactive metallic transuranic element, belongs to the actinoids. Seven known
isotopes exist, the most stable being No-254 with a half-life of 255 seconds. First
identified with certainty by Albert Ghiorso and Glenn T. Seaborg in 1966. Unnilbium
has been proposed as an alternative name.
103
Lawrencium
Lr
Lawrencium
Name: Lawrencium
Symbol: Lr
Atomic Number: 103
Atomic Mass: (262.0) amu
Melting Point: Unknown
Boiling Point: Unknown
What is Lawrencium?
Appearance unknown, however it is most likely silvery-white or grey and metallic. Lawrencium is a
synthetic rare-earth metal. There are eight known radioisotopes, the most stable being Lr-262 with
a half-life of 3.6 hours. Due to the short half-life of lawrencium, and its radioactivity, there are no
known uses for it. Identified by Albert Ghiorso in 1961 at Berkeley. It was produced by bombarding
californium with boron ions. The name is temporary IUPAC nomenclature, the origin of the name
comes from Ernest O. Lawrence, the inventor of the cyclotron. If sufficient amounts of lawrencium
were produced, it would pose a radiation hazard.
104
Rutherfordium
Rf
Rutherfordium
Name: Rutherfordium
Symbol: Rf
Atomic Number: 104
Atomic Mass: (261.0) amu
Melting Point: Unknown
Boiling Point: Unknown
What is Rutherfordium (Unnilquadium)?
Radioactive transactinide element. Expected to have similar chemical properties to
those displayed by hafnium. Rf-260 was discovered by the Joint Nuclear Research
Institute at Dubna (U.S.S.R.) in 1964. Researchers at Berkeley discovered Unq-257
and Unq-258 in 1964.
105
Dubnium
Db
Dubnium
Name: Dubnium
Symbol: Db
Atomic Number: 105
Atomic Mass: (262.0) amu
Melting Point: Unknown
Boiling Point: Unknown
What is Dubnium (Unnilpentium)?
Radioactive transactinide element. Half-life of 1.6s.
Discovered in 1970 by Berkeley researchers. So far,
seven isotopes have been discovered.
106
Seaborgium
Sg
Seaborgium
Name: Seaborgium
Symbol: Sg
Atomic Number: 106
Atomic Mass: (263.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Link
What is Seaborgium (Unnilhexium)?
Half-life of 0.9 +/- 0.2 s. Discovered by the Joint
Institute for Nuclear Research at Dubna (U.S.S.R.) in
June of 1974. Its existence was confirmed by the
Lawrence Berkeley Laboratory and Livermore National
Laboratory in September of 1974.
107
Bohrium
Bh
Bohrium
Name: Bohrium
Symbol: Bh
Atomic Number: 107
Atomic Mass: (262.0) amu
Melting Point: Unknown
Boiling Point: Unknown
What is Bohrium (Unnilseptium)?
Radioactive transition metal. Half-life of approximately
1/500 s. Discovered by the Joint Institute for Nuclear
Research at Dubna (U.S.S.R.) in 1976. Confirmed by
West German physicists at the Heavy Ion Research
Laboratory at Darmstadt.
108
Hs
Hassium
Name: Hassium
Symbol: Hs
Atomic Number: 108
Atomic Mass: (265.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Hassium
109
Mt
Meitnerium
Name: Meitnerium
Symbol: Mt
Atomic Number: 109
Atomic Mass: (266.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Meitnerium
Einsteinium (Es)
Albert Einstein
– Relativity
– E = mc2
– Offered Presidency of Israel
– Element 99
– Photoelectric effect
• Solar calculator
Curium (Cm)
• Madame Curie
– Pioneer in radioactivity
• (Ra = radium)
– 25 pounds of pitchblende ore
yields 1/1000 of a gram of radium
– Emits 2 millions times as much
radiation as uranium
• (Rn = radon gas)
– Discovered 5 elements
– Nobel Prize (5 in Curie family)
– Born in Poland
• (Po = polonium)
Marie Curie (1876–1934)
Radium (Ra)
Radium was used as a fluorescent paint on watch dials. It was
applied with thin brushes that workers would lick to keep a fine tip.
Many people died from the exposure to radium.
Radon Gas
Radon gas occurs naturally
from the radioactive decay
of radium. Radium is found
in small amounts in rock.
Ra  Rn + radiation
Predicted fraction of homes over 4 picocuries/liter radon
Nobelium (No)
Element 102
Inventor:
dynamite (TNT)
blasting gelatin
Nobel Prize
NO2
O2N
NO2
CH3
Trinitrotoluene
Alfred Nobel
“Merchant of Death”
Seaborgium (Sg)
Glenn Seaborg
– Separated f-block from rest of periodic table
– Worked on Manhattan Project
(Atomic bomb)
– Classified until after WW II
– Element 106
• Only living person to have an element named for them
Silicon vs. Silicone
• Silicon (Si) element
• Silicone (…Si – O – Si…) polymer
– Sealant (caulk) prevents leaks
– Breast augmentation
No cause-and-effect relationship exists between
breast enlargement and breast cancer. Only one
researcher found a causal link.
12
Mg
Magnesium
Atomic Mass 24 amu
melting point =
silver gray metal
used in flash bulbs, bombs,and flares
8th most abundant element (2.2% of Earth’s crust)
lack of Mg produces same biological effect
as alcoholism (delirium tremens)
24.305
Potassium Metal in Water
Newmark, CHEMISTRY, 1993, page 25
e
Ir O N Mn
77
1
8
7
25
H
H
He
1
2
1
2
3
Li
Be
B
C
N
O
F
Ne
3
4
5
6
7
8
9
10
Al
Si
P
S
Cl
Ar
13
14
15
16
17
18
Na Mg
11
4
K
19
5
7
Ca Sc
Ti
V
Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br
Kr
23
24
35
36
I
Xe
53
54
20
21
22
Rb Sr
Y
Zr Nb Mo Tc Ru Rh Pd Ag Cd
In
39
40
41
42
49
Hf
Ta
W
72
73
74
37
6
12
38
Cs Ba
55
56
Fr
Ra
87
88
*
W
25
43
26
44
Re Os
75
76
27
28
29
47
30
45
46
Ir
Pt Au Hg
Tl
77
78
81
79
48
31
80
32
33
34
Sn Sb Te
50
51
Pb Bi
82
83
52
Po At Rn
84
85
86
Rf Db Sg Bh Hs Mt
104
105
106
107
108
109
La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
57
58
59
Ac Th Pa
89
90
91
60
U
92
61
62
63
64
65
66
Np Pu Am Cm Bk Cf
93
94
95
96
97
98
67
68
69
70
71
Es Fm Md No Lr
99
100
101
102
103
Printable
Periodic
Table
Elements Database
Elements listed Alphabetically
Actinium
Aluminum
Americium
Antimony
Argon
Arsenic
Astatine
Barium
Berkelium
Beryllium
Bismuth
Boron
Bromine
Cadmium
Cesium
Calcium
Californium
Carbon
Cerium
Chlorine
Chromium
Cobalt
Copper
Curium
Dysprosium
Einsteinium
Erbium
Europium
Fermium
Fluorine
Francium
Gadolinium
Gallium
Germanium
Gold
Hafnium
Helium
Holmium
Hydrogen
Indium
Iodine
Iridium
Iron
Krypton
Lanthanum
Lawrencium
Lead
Lithium
Lutetium
Magnesium
Manganese
Meitnerium
Mendelevium
Mercury
Molybdenum
Neodymium
Neon
Neptunium
Nickel
Niobium
Nitrogen
Nobelium
Osmium
Oxygen
Palladium
Phosphorus
Platinum
Plutonium
Polonium
Potassium
Praseodymium
Promethium
Protactinium
Radium
Radon
Rhenium
Rhodium
Rubidium
Ruthenium
Samarium
Scandium
Selenium
Silicon
Silver
Sodium
Strontium
Sulfur
Tantalum
Technetium
Tellurium
Terbium
Thallium
Thorium
Thulium
Tin
Titanium
Tungsten
Unnilhexium
Unniloctium
Unnilpentium
Unnilquadium
Unnilseptium
Uranium
Vanadium
Xenon
Ytterbium
Yttrium
Zinc
Zirconium
Get free Chemistry and Physics images for your school projects and/or research work.
Feel free to use the periodic table images below in your school projects and/or research work.
Periodic Table of the Elements
Images from:
http://www.chemsoc.org/viselements/pages/pertable_j.htm
Data from:
http://www.chemicalelements.com/
http://www.elementsdatabase.com/
Periodic Table of the Elements
http://www.periodictable.com
Written by: Bill Byles - bylesb@internet4classrooms.com & Jeff Christopherson – unit5.org/chemistry