Periodic Table Element Comparison: Compare Elements - Americium vs Krypton

Compare Americium and Krypton on the basis of their properties, attributes and periodic table facts. Compare elements on more than 90 properties. All the elements of similar categories show a lot of similarities and differences in their chemical, atomic, physical properties and uses. These similarities and dissimilarities should be known while we study periodic table elements. You can study the detailed comparison between Americium vs Krypton with most reliable information about their properties, attributes, facts, uses etc. You can compare Am vs Kr on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more. Americium and Krypton comparison table on more than 90 properties.

Americium and Krypton Comparison

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1
1
H
Hydrogen
1.008

Atomic #

Electronic Shell #

Symbol
Name
Atomic Weight
HGas
HgLiquid
CSolid
Metals
Metalloids
NonMetals
Alkali metals
Alkali earth metals
Lanthanoids
Transition metals
Post-transition metals
Other nonmetals
Halogens
Nobel gas
Actinoids
2
He
Helium
4.003
2
3
Li
Lithium
6.941
4
Be
Beryllium
9.012
5
B
Boron
10.811
6
C
Carbon
12.011
7
N
Nitrogen
14.007
8
O
Oxygen
15.999
9
F
Fluorine
18.998
10
Ne
Neon
20.180
3
11
Na
Sodium
22.990
12
Mg
Magnesium
24.305
13
Al
Aluminium
26.982
14
Si
Silicon
28.085
15
P
Phosphorus
30.974
16
S
Sulfur
32.065
17
Cl
Chlorine
35.453
18
Ar
Argon
39.948
4
19
K
Potassium
39.098
20
Ca
Calcium
40.078
21
Sc
Scandium
44.956
22
Ti
Titanium
47.867
23
V
Vanadium
50.941
24
Cr
Chromium
51.996
25
Mn
Manganese
54.938
26
Fe
Iron
55.845
27
Co
Cobalt
58.933
28
Ni
Nickel
58.693
29
Cu
Copper
63.546
30
Zn
Zinc
65.409
31
Ga
Gallium
69.723
32
Ge
Germanium
72.640
33
As
Arsenic
74.922
34
Se
Selenium
78.960
35
Br
Bromine
79.904
36
Kr
Krypton
83.798
5
37
Rb
Rubidium
85.468
38
Sr
Strontium
87.620
39
Y
Yttrium
88.906
40
Zr
Zirconium
91.224
41
Nb
Niobium
92.906
42
Mo
Molybdenum
95.940
43
Tc
Technetium
98
44
Ru
Ruthenium
101.070
45
Rh
Rhodium
102.906
46
Pd
Palladium
106.420
47
Ag
Silver
107.868
48
Cd
Cadmium
112.411
49
In
Indium
114.818
50
Sn
Tin
118.710
51
Sb
Antimony
121.760
52
Te
Tellurium
127.600
53
I
Iodine
126.904
54
Xe
Xenon
131.293
6
55
Cs
Cesium
132.905
56
Ba
Barium
137.327
57 - 71
La - Lu
Lanthanides
72
Hf
Hafnium
178.490
73
Ta
Tantalum
180.948
74
W
Tungsten
183.840
75
Re
Rhenium
186.207
76
Os
Osmium
190.230
77
Ir
Iridium
192.217
78
Pt
Platinum
195.078
79
Au
Gold
196.967
80
Hg
Mercury
200.590
81
Tl
Thallium
204.383
82
Pb
Lead
207.200
83
Bi
Bismuth
208.980
84
Po
Polonium
209
85
At
Astatine
210
86
Rn
Radon
222
7
87
Fr
Francium
223
88
Ra
Radium
226
89 - 103
Ac - Lr
Actinides
104
Rf
Rutherfordium
261
105
Db
Dubnium
262
106
Sg
Seaborgium
266
107
Bh
Bohrium
264
108
Hs
Hassium
269
109
Mt
Meitnerium
268
110
Ds
Darmstadtium
281
111
Rg
Roentgenium
272
112
Cn
Copernicium
285
113
Nh
Nihonium
284
114
Fl
Flerovium
289
115
Mc
Moscovium
288
116
Lv
Livermorium
292
117
Ts
Tennessine
294
118
Og
Oganesson
294
Lanthanides
57
La
Lanthanum
138.905
58
Ce
Cerium
140.116
59
Pr
Praseodymium
140.908
60
Nd
Neodymium
144.240
61
Pm
Promethium
145
62
Sm
Samarium
150.360
63
Eu
Europium
151.964
64
Gd
Gadolinium
157.250
65
Tb
Terbium
158.925
66
Dy
Dysprosium
162.500
67
Ho
Holmium
164.930
68
Er
Erbium
167.259
69
Tm
Thulium
168.934
70
Yb
Ytterbium
173.040
71
Lu
Lutetium
174.967
Actinides
89
Ac
Actinium
227
90
Th
Thorium
232.038
91
Pa
Protactinium
231.036
92
U
Uranium
238.029
93
Np
Neptunium
237
94
Pu
Plutonium
244
95
Am
Americium
243
96
Cm
Curium
247
97
Bk
Berkelium
247
98
Cf
Californium
251
99
Es
Einsteinium
252
100
Fm
Fermium
257
101
Md
Mendelevium
258
102
No
Nobelium
259
103
Lr
Lawrencium
262

Facts

NameAmericiumKrypton
Atomic Number9536
Atomic SymbolAmKr
Atomic Weight243 83.798
Phase at STPSolid Gas
ColorSilver Colorless
Metallic ClassificationActinide Noble Gas
Group in Periodic Tablegroup - group 18
Group Namehelium family or neon family
Period in Periodic Tableperiod 7 period 4
Block in Periodic Tablef -blockp -block
Electronic Configuration[Rn] 5f7 7s2 [Ar] 3d10 4s2 4p6
Electronic Shell Structure (Electrons per shell)2, 8, 18, 32, 25, 8, 22, 8, 18, 8
Melting Point1449 K115.79 K
Boiling Point2284 K119.93 K
CAS NumberCAS7440-35-9 CAS7439-90-9
Neighborhood ElementsNeighborhood Elements of AmericiumNeighborhood Elements of Krypton

History

ParameterAmericiumKrypton
HistoryThe element Americium was discovered by G. T. Seaborg,R. A. James,O. Morgan and A. Ghiorso in year 1944 in United States. Americium derived its name from The Americas, as the element was first synthesized on the continent, by analogy with europium.The element Krypton was discovered by W. Ramsay and W. Travers in year 1898 in United Kingdom. Krypton derived its name from the Greek kryptos, meaning 'hidden'.
DiscoveryG. T. Seaborg,R. A. James,O. Morgan and A. Ghiorso (1944)W. Ramsay and W. Travers (1898)
Isolated ()W. Ramsay and W. Travers (1898)

Presence: Abundance in Nature and Around Us

Parts per billion (ppb) by weight / by atoms (1ppb =10^-7 %)

PropertyAmericiumKrypton
Abundance in Universe- / -40 / 0.6
Abundance in Sun- / -- / -
Abundance in Meteorites- / -- / -
Abundance in Earth's Crust- / -0.15 / 0.04
Abundance in Oceans- / -0.21 / 0.016
Abundance in Humans- / -- / -

Crystal Structure and Atomic Structure

PropertyAmericiumKrypton
Atomic Volume17.63 cm3/mol22.35 cm3/mol
Atomic Radius175 pm88 pm
Covalent Radius- 110 pm
Van der Waals Radius- 202 pm

Atomic Spectrum - Spectral Lines

Emission SpectrumEmission Spectrum of Americium | SchoolMyKidsEmission Spectrum of Krypton | SchoolMyKids
Absorption SpectrumAbsorption Spectrum of Americium | SchoolMyKidsAbsorption Spectrum of Krypton | SchoolMyKids
Lattice Constant346.81, 346.81, 1124.1 pm570.6, 570.6, 570.6 pm
Lattice Angleπ/2, π/2, 2 π/3π/2, π/2, π/2
Space Group NameP63/mmc Fm_ 3m
Space Group Number194 225
Crystal Structure

Simple Hexagonal

95 Am Americium - Crystal Structure | SchoolMyKids

Face Centered Cubic

36 Kr Krypton - Crystal Structure | SchoolMyKids

Atomic and Orbital Properties

PropertyAmericiumKrypton
Atomic Number9536
Number of Electrons (with no charge)9536
Number of Protons9536
Mass Number24383.798
Number of Neutrons14848
Shell structure (Electrons per energy level)2, 8, 18, 32, 25, 8, 22, 8, 18, 8
Electron Configuration[Rn] 5f7 7s2 [Ar] 3d10 4s2 4p6
Valence Electrons5f7 7s2 4s2 4p6
Oxidation State30
Atomic Term Symbol (Quantum Numbers)8S7/2 1S0
Shell structure95 Am Americium Electron Shell Structure | SchoolMyKids36 Kr Krypton Electron Shell Structure | SchoolMyKids

Isotopes and Nuclear Properties

Americium has 0 stable naturally occuring isotopes while Krypton has 6 stable naturally occuring isotopes.

ParameterAmericiumKrypton
Known Isotopes231Am, 232Am, 233Am, 234Am, 235Am, 236Am, 237Am, 238Am, 239Am, 240Am, 241Am, 242Am, 243Am, 244Am, 245Am, 246Am, 247Am, 248Am, 249Am69Kr, 70Kr, 71Kr, 72Kr, 73Kr, 74Kr, 75Kr, 76Kr, 77Kr, 78Kr, 79Kr, 80Kr, 81Kr, 82Kr, 83Kr, 84Kr, 85Kr, 86Kr, 87Kr, 88Kr, 89Kr, 90Kr, 91Kr, 92Kr, 93Kr, 94Kr, 95Kr, 96Kr, 97Kr, 98Kr, 99Kr, 100Kr
Stable Isotopes

-

Naturally occurring stable isotopes:

78Kr, 80Kr, 82Kr, 83Kr, 84Kr, 86Kr

Neutron Cross Section 74 25
Neutron Mass Absorption - 0.013

Chemical Properties: Ionization Energies and electron affinity

PropertyAmericiumKrypton
Valence or Valency4 2
Electronegativity1.13 Pauling Scale3 Pauling Scale
Electron Affinity- 0 kJ/mol
Ionization Energies
1st: 578 kJ/mol
1st: 1350.8 kJ/mol
2nd: 2350.4 kJ/mol
3rd: 3565 kJ/mol
4th: 5070 kJ/mol
5th: 6240 kJ/mol
6th: 7570 kJ/mol
7th: 10710 kJ/mol
8th: 12138 kJ/mol
9th: 22274 kJ/mol
10th: 25880 kJ/mol
11th: 29700 kJ/mol
12th: 33800 kJ/mol
13th: 37700 kJ/mol
14th: 43100 kJ/mol
15th: 47500 kJ/mol
16th: 52200 kJ/mol
17th: 57100 kJ/mol
18th: 61800 kJ/mol
19th: 75800 kJ/mol
20th: 80400 kJ/mol
21st: 85300 kJ/mol
22nd: 90400 kJ/mol
23rd: 96300 kJ/mol
24th: 101400 kJ/mol
25th: 111100 kJ/mol
26th: 116290 kJ/mol
27th: 282500 kJ/mol
28th: 296200 kJ/mol
29th: 311400 kJ/mol
30th: 326200 kJ/mol

Physical Properties

PropertyAmericiumKrypton
Density13.67 g/cm30.00375 g/cm3
Molar Volume17.63 cm3/mol22.35 cm3/mol

Elastic Properties

Young Modulus- -
Shear Modulus- -
Bulk Modulus- -
Poisson Ratio- -

Hardness - Tests to Measure of Hardness of Element

Mohs Hardness- -
Vickers Hardness- -
Brinell Hardness- -

Electrical Properties

Electrical Conductivity- -
Resistivity - -
Superconducting Point0.6 -

Heat and Conduction Properties

Thermal Conductivity10 W/(m K)0.00943 W/(m K)
Thermal Expansion- -

Magnetic Properties

Magnetic TypeParamagnetic Diamagnetic
Curie Point- -
Mass Magnetic Susceptibility5.15e-8 m3/kg-4.4e-9 m3/kg
Molar Magnetic Susceptibility1.251e-8 m3/mol-3.69e-10 m3/mol
Volume Magnetic Susceptibility0.000704 -1.65e-8

Optical Properties

Refractive Index- 1.000427

Acoustic Properties

Speed of Sound- 1120 m/s

Thermal Properties - Enthalpies and thermodynamics

PropertyAmericiumKrypton
Melting Point1449 K115.79 K
Boiling Point2284 K119.93 K
Critical Temperature- 209.41 K
Superconducting Point0.6 -

Enthalpies

Heat of Fusion- 1.64 kJ/mol
Heat of Vaporization- 9.02 kJ/mol
Heat of Combustion- -

Regulatory and Health - Health and Safety Parameters and Guidelines

ParameterAmericiumKrypton
CAS NumberCAS7440-35-9 CAS7439-90-9
RTECS Number- RTECSOC6772500
DOT Hazard Class- 2.2
DOT Numbers- 1970
EU Number- EU231-098-5
NFPA Fire Rating- -
NFPA Health Rating- -
NFPA Reactivity Rating- -
NFPA Hazards- -
AutoIgnition Point- -
Flashpoint- -

Compare With Other Elements

Compare Americium and Krypton with other elements of the periodic table.

Compare Americium with all Group elements

Compare Americium with all Period 7 elements

Compare Americium with all Actinide elements

Compare Krypton with all Group 18 elements

Compare Krypton with all Period 4 elements

Compare Krypton with all Noble Gas elements