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Periodic Table Element Comparison: Compare Elements - Americium vs Krypton

Compare Americium and 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.

Facts

Americium
95
Am
243
Solid
Silver
actinide
N/A
 
7
f
[Rn] 5f7 7s2
1176 °C
2011 °C
2, 8, 18, 32, 25, 8, 2
CAS7440-35-9
Neighborhood Elements of Americium
Krypton
36
Kr
83.798
Gas
Colorless
noble gas
18
helium family or neon family 
4
p
[Ar] 3d10 4s2 4p6
-157.36 °C
-153.22 °C
2, 8, 18, 8
CAS7439-90-9
Neighborhood Elements of Krypton

History

History
The element Americium was discovered by Glenn T. Seaborg in year 1944 in United States. Americium derived its name from from The Americas, as the element was first synthesized on the continent, by analogy with europium
The element Krypton was discovered by William Ramsay in year 1898 in United Kingdom. Krypton derived its name derived its name from from the Greek kryptos, meaning 'hidden'

Presence: Abundance in Nature and Around Us

Ppb by weight (1ppb =10^-7 %)
N/A
None
None
None
None
None
4×10-6%
N/A
N/A
1.5×10-8%
2.1×10-8%
N/A

Crystal Structure and Atomic Structure

175 pm
17.77615215801 cm3
N/A
N/A
74
americium Spectrum
346.81, 346.81, 1124.1 pm
π/2, π/2, 2 π/3
P63/mmc
194

Simple Hexagonal

americium Crystal Structure
88 pm
22.346133333333 cm3
110 pm
202 pm
25
krypton Spectrum
570.6, 570.6, 570.6 pm
π/2, π/2, π/2
Fm_ 3m
225

Face Centered Cubic

krypton Crystal Structure

Atomic and Orbital Properties

Atomic Number
Number of Electrons (with no charge)
Number of Protons
Mass Number
Number of Neutrons
Shell structure (Electrons per energy level)
Electron Configuration
Valence Electrons
Oxidation State
Atomic Term Symbol (Quantum Numbers)
Shell structure
95
95
95
243
148
2, 8, 18, 32, 25, 8, 2
[Rn] 5f7 7s2
5f7 7s2
 2;3;4;5;6;7
8S7/2
americium Shells
36
36
36
83.798
47.798
2, 8, 18, 8
[Ar] 3d10 4s2 4p6
4s2 4p6
 2
1S0
krypton Shells

Isotopes - Nuclear Properties

Isotopes
Naturally occurring stable isotopes:
None.
Naturally occurring stable isotopes:
78Kr, 80Kr, 82Kr, 83Kr, 84Kr, 86Kr.

Chemical Properties: Ionization Energies and electron affinity

4
1.3
N/A
578 kJ/mol
2
3
0 kJ/mol
1350.8, 2350.4, 3565, 5070, 6240, 7570, 10710, 12138, 22274, 25880, 2.97×104, 3.38×104, 3.77×104, 4.31×104, 4.75×104, 5.22×104, 5.71×104, 6.18×104, 7.58×104, 8.04×104, 8.53×104 kJ/mol

Physical Properties

13.67 g/cm3
17.77615215801

 

N/A
N/A
N/A
N/A


 

N/A
N/A
N/A

 

N/A
N/A
0.6

 

10 W/(m K)
N/A

 

Paramagnetic
N/A
5.15×10-8
1.251×10-8
0.000704

 

N/A

 

N/A
3.75 g/l
22.346133333333

 

N/A
N/A
N/A
N/A


 

N/A
N/A
N/A

 

N/A
N/A
N/A

 

0.00943 W/(m K)
N/A

 

Diamagnetic
N/A
-4.4×10-9
-3.69×10-10
-1.65×10-8

 

1.000427

 

1120 m/s

Thermal Properties - Enthalpies and thermodynamics

1176 °C
2011 °C
N/A
0.6

 

N/A
N/A
N/A
-157.36 °C
-153.22 °C
209.41 K
N/A

 

1.64 kJ/mol
9.02 kJ/mol
N/A

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS7440-35-9
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

 

N/A
N/A
CAS7439-90-9
RTECSOC6772500
2.2
1970
EU231-098-5
N/A
N/A
N/A
N/A

 

N/A
N/A