Plutonium Element (Periodic Table)

Plutonium

Plutonium (Pu) is a chemical element of the periodic table, located in the period 7, and has the atomic number 94. It is the sixth element in the actinide series. It is a bright, silvery-white metal that turns gray or yellow tarnish, when it is exposed to air. It is named after the planet Pluto. It is the second transuranium element and is counted as one of the radioactive elements.

group
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
period
1
1
H
2
He
2
3
Li
4
Be
5
B
6
C
7
N
8
O
9
F
10
Ne
3
11
Na
12
Mg
13
Al
14
Si
15
P
16
S
17
Cl
18
Ar
4
19
K
20
Ca
21
Sc
22
Ti
23
V
24
Cr
25
Mn
26
Fe
27
Co
28
Ni
29
Cu
30
Zn
31
Ga
32
Ge
33
As
34
Se
35
Br
36
Kr
5
37
Rb
38
Sr
39
Y
40
Zr
41
Nb
42
Mo
43
Tc
44
Ru
45
Rh
46
Pd
47
Ag
48
Cd
49
In
50
Sn
51
Sb
52
Te
53
I
54
Xe
6
55
Cs
56
Ba
72
Hf
73
Ta
74
W
75
Re
76
Os
77
Ir
78
Pt
79
Au
80
Hg
81
Tl
82
Pb
83
Bi
84
Po
85
At
86
Rn
7
87
Fr
88
Ra
104
Rf
105
Db
106
Sg
107
Bh
108
Hs
109
Mt
110
Ds
111
Rg
112
Cn
113
Nh
114
Fl
115
Mc
116
Lv
117
Ts
118
Og
57
La
58
Ce
59
Pr
60
Nd
61
Pm
62
Sm
63
Eu
64
Gd
65
Tb
66
Dy
67
Ho
68
Er
69
Tm
70
Yb
71
Lu
89
Ac
90
Th
91
Pa
92
U
93
Np
94
Pu
95
Am
96
Cm
97
Bk
98
Cf
99
Es
100
Fm
101
Md
102
No
103
Lr
– f block

FAQs on Plutonium Element

Plutonium
‣ What does plutonium look like?

Appearance: silvery white, tarnishing to dark gray in air
‣ When was plutonium discovered and by whom?

Discovery: Glenn T. Seaborg, Arthur Wahl, Joseph W. Kennedy, Edwin Mcmillan (1940-1941)
‣ Where is plutonium located on the periodic table?

Plutonium Periodic Table

Location: Plutonium is found in the seventh row of the periodic table, next to the neptunium element.
‣ What is the atomic number of plutonium?

Atomic number (Z): 94
‣ What is the symbol for plutonium?

Symbol: Pu
‣ What is the atomic weight of plutonium?

Standard atomic weight: [244]
‣ Which block does plutonium belong to?

Block: f-block
‣ What period is plutonium in the periodic table?

Period: 7
Plutonium atomic radius: empirical: 159 pm
Plutonium covalent radius: 187±1 pm
‣ What is plutonium melting point?

Melting point: 912.5 K (639.4 °C, 1182.9 °F)
‣ What is plutonium’s boiling point?

Boiling point: 3505 K (3228 °C, 5842 °F)
‣ How many electron shells does plutonium have?

Electrons per shell: 2, 8, 18, 32, 24, 8, 2
‣ What is the electron configuration of plutonium?

Electron configuration: [Rn] 5f6 7s2
‣ What is plutonium ionization energy?

Ionization energies:
1st: 584.7 kJ/mol
‣ What is the phase of plutonium?

Phase (at r.t): solid
‣ What is the density of plutonium?

Density (near r.t): 19.85 g/cm3
when liquid (at m.p): 16.63 g/cm3
Plutonium magnetic ordering: paramagnetic
Plutonium natural occurrence: from decay
Plutonium oxidation state: +2, +3, +4, +5, +6, +7, +8
‣ What’s the electronegativity of plutonium?

Electronegativity: Pauling scale: 1.28
Plutonium poisson’s ratio: 0.21
Plutonium heat of fusion: 2.82 kJ/mol
Plutonium heat of vaporization: 333.5 kJ/mol
Plutonium molar heat capacity: 35.5 J/(mol K)
Speed of sound in plutonium: 2260 m/s
Plutonium crystal structure: monoclinic
Thermal expansion of plutonium: 46.7 µm/(m.K) (at 25 °C)
Thermal conductivity of plutonium: 6.74 W/(m.K)
Plutonium electrical resistivity: 1.460 µΩ.m (at 0 °C)
Young’s modulus of plutonium: 96 GPa
Shear modulus of plutonium: 43 GPa
Plutonium CAS number: 7440-07-5

‣ Plutonium vapor pressure

Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)175619532198251129263499

‣ How many isotopes does plutonium have?

Main isotopes of plutonium
IsotopeAbundanceHalf-life (t1/2)Decay modeProduct
238Putrace87.74 ySF
α

234U
239Putrace2.41 × 104 ySF
α

235U
240Putrace6550 ySF
α

236U
241Pusyn14 yβ
SF
241Am
242Pusyn3.73 × 105 ySF
α

238U
244Putrace8.08 × 107 yα
SF
240U

.
.
.

Related:

Also Read:

Leave a Comment