Berkelium Element (Periodic Table)

Berkelium

Berkelium (Bk) is a chemical element of the periodic table, located in the period 7, and has the atomic number 97. It is the ninth element in the actinide series. It is a soft, silvery-white metal which is named after the city of Berkeley, California, where it was first made. It is the fifth 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 Berkelium Element

Berkelium
‣ What does berkelium look like?

Appearance: silvery
‣ Who discovered berkelium, when and where?

Discovery: Lawrence Berkeley National Laboratory (1949)
‣ Location of berkelium on the periodic table

Berkelium Periodic Table

Location: Berkelium is found in the seventh row of the periodic table, next to the curium element.
‣ What is berkelium atomic mass number?

Atomic number (Z): 97
Berkelium symbol: Bk
Berkelium atomic weight: [247]
‣ What block is berkelium in the periodic table?

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

Period: 7
Berkelium atomic radius: empirical: 170 pm
‣ What is the melting point of berkelium?

Melting point: beta: 1259 K (986 °C, 1807 °F)
‣ What is berkelium boiling point?

Boiling point: beta: 2900 K (2627 °C, 4760 °F)
‣ How many shells does berkelium have?

Electrons per shell: 2, 8, 18, 32, 27, 8, 2
‣ What is the electronic configuration for berkelium?

Electron configuration: [Rn] 5f9 7s2
Berkelium ionization energies:1st: 601 kJ/mol
‣ Is berkelium a solid, liquid or gas?

Phase (at r.t): solid
Berkelium density (near r.t):alpha: 14.78 g/cm3
beta: 13.25 g/cm3
Berkelium magnetic ordering: paramagnetic
Berkelium natural occurrence: synthetic
Berkelium oxidation state: +2, +3, +4, +5
Berkelium electronegativity: Pauling scale: 1.3
Berkelium heat of fusion: 7.92 kJ/mol (calculated)
Berkelium crystal structure: double hexagonal close-packed (dhcp)
Thermal conductivity of berkelium: 10 W/(m.K)
Berkelium CAS number: 7440-40-6

‣ How many isotopes does berkelium have?

Main isotopes of berkelium
IsotopeAbundanceHalf-life (t1/2)Decay modeProduct
245Bksyn4.94 dε
α
245Cm
241Am
246Bksyn1.8 dα
ε
242Am
246Cm
247Bksyn1380 yα243Am
248Bksyn>300 yα244Am
249Bksyn330 dα
SF
β
245Am

249Cf

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