prometium mungsuh Lawrencium
Tabel périodik
Symbol
Pm
Lr
Panggil Group
ora Sumadhiya
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Panggil periode
6
7
Block
pemblokiran f
d block
Family unsur
lanthanide
actinide
CAS Number
7440122
99+
22537195
15
Jeneng papan Group
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Space Group Number
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facts
Facts Interesting
- metal Prometium ditemokaké ing pitchblende.
- Prometium logam logam Highly radioaktif.
- Punika sacara sintesis diprodhuksi logam.
- resiko radiation bisa gawé dening iku.
sumber
Found in Minerals, Mining
Némbakaké californium-252 karo Boron inti, Found in Minerals, Mining
History
sing katutup
Chien Shiung Wu, Emilio Segrè, Hans Bethe
Lawrence Berkeley National Laboratory and Joint Institute for Nuclear Research
Discovery
ing taun 1942
ing 1961-1971
turah mbrawah
ulah
Ulah lan Wuku
- Kang digunakake kanggo riset waé. jumlah cilik saka logam digunakake ing batre atom.
- bosok radioaktif sawijining digunakake kanggo Phosphor kanggo menehi mati lampu. Lampu cemlorot diowahi dadi listrik.
- Efesus saiki dikenal saka logam Lawrencium sing winates kanggo riset waé mung.
Ulah Industrial
NA
NA
Ulah Medical
NA
NA
Ulah liyane
NA
NA
Properties biologi
keracunan
non Toxic
Unknown
Saiki ing badan Human
Ora
Ora
Sang
0.00 Sang / mg dm-3
37
0.00 Sang / mg dm-3
37
ing Bone
ora Sumadhiya
0.00 ppm
36
fisik Properties
leleh Point
1,042.00 ° C
99+
1,627.00 ° C
20
Boiling Point
3,000.00 ° C
31
ora Sumadhiya
katon
State fisik
Solid
Solid
warna
Unknown
Silver
luster
metallic
Unknown Luster
atose
Kacepetan swara
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Properties Optical
allotropes
Ora
Ora
α allotropes
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β allotropes
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γ allotropes
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Kimia Properties
Formula Kimia
Pm
Lr
isotop
Isotop dikenal
27
12
10
28
keelektronegatifan
Allred Rochow Elektronegativitas
1.07
32
ora Sumadhiya
Electropositivity
tenogo ionisasi
Level Energy 1st
540.00 kJ / mol
99+
470.00 kJ / mol
99+
Level Energy 2
1,050.00 kJ / mol
99+
1,428.00 kJ / mol
99+
Level Energy 3rd
2,150.00 kJ / mol
99+
2,228.00 kJ / mol
99+
Level Energy 4
3,970.00 kJ / mol
38
4,910.00 kJ / mol
21
padha karo elektrokimia
1.80 g / amp-day
36
3.23 g / amp-day
11
Fungsi Work elektron
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Properties Kimia liyane
ionisasi, Isotop radioaktif, kelarutan
ionisasi, Isotop radioaktif
atom Properties
Panggil atom
61
99+
103
15
Konfigurasi elektron
[Xe] 4F 5 6s 2
[Rn] 5F 14 7s 2 7p 1
Struktur Crystal
Double Hexagonal Tutup dikempalken (DHCP)
Hexagonal Tutup dikempalken (HCP)
Crystal pola
DHCP-Crystal-Structure-of-Promethium.jpg#100
BCC-Crystal-Structure-.jpg#100
atom
Jumlah proton
61
99+
103
15
Jumlah Neutron
84
40
157
7
Jumlah Èlèktron
61
99+
103
15
Radius saka Atom
Radius atom
183.00 pm
10
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kovalen Radius
199.00 pm
12
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Van der Waals Radius
236.00 pm
16
246.00 pm
8
Bobot atom
145.00 Amu
99+
266.00 Amu
12
Volume atom
22.39 cm3 / mol
12
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Nomer atom jejer
Potensi Valence Electron
44.10 (-eV)
39
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Constant pola
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pola Angles
Unknown
NA
Pola C / A rasio
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Teknik Properties
Kapadhetan
Kapadhetan Ing suhu kamar
7.26 g / cm 3
99+
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Strength tensile
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viskositas
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meksa beluk
situs kelenturan
nyukur pengaturan
18.00 GPA
36
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pengaturan akeh
33.00 GPA
36
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Young kang pengaturan
46.00 GPA
38
ora Sumadhiya
Poisson rasio
0.28
17
0.32
12
Properties Teknik liyane
NA
Unknown
Magnetic Properties
Ciri Magnetic
Gravitasi tartamtu
7.26
99+
ora Sumadhiya
Nindakake Magnetic
paramagnetic
Unknown
Properties Listrik
Property Listrik
Arman
Unknown
resistivity
0.75 nΩ · m
99+
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elektron Affinity
50.00 kJ / mol
21
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termal Properties
Kalor tartamtu
0.18 J / (kg K)
33
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Graham Kapasitas kalor
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doyo termal
17.90 W / m · K
99+
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suhu kritis
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Expansion termal
9.00 μm / (m · K)
99+
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enthalpy
Enthalpy saka Fusion
7.50 kJ / mol
99+
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Enthalpy saka atomization
310.00 kJ / mol
34
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Standard molar Entropy
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