Platinum Element (Periodic Table)

Platinum

Platinum (Pt) is a chemical element of the periodic table, located in the group 10 and the period 6, and is having the atomic number 78. It is a soft, malleable, silvery-white transition metal, whose name comes from the Spanish word “platina”, which means little silver.

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
– d block

FAQs on Platinum Element

Platinum
‣ What does platinum look like?

Appearance: silvery white
‣ Who discovered platinum and when?

Discovery: Antonio de Ulloa (1735)
‣ Where is platinum found on the periodic table?

Platinum Periodic Table

Location: Platinum is found in the tenth column of the periodic table, next to the iridium element.
‣ What is platinum’s atomic number?

Atomic number (Z): 78
‣ What is platinum’s symbol?

Symbol: Pt
‣ What is the atomic weight of platinum?

Standard atomic weight: 195.084
‣ In which block of the periodic table is platinum found to?

Block: d-block
‣ What group is platinum in on the periodic table?

Group: 10
‣ What period is platinum in on the periodic table?

Period: 6
‣ What’s the atomic radius of platinum?

Atomic radius: empirical: 139 pm
Platinum covalent radius: 136±5 pm
Platinum Van der Waals radius: 175 pm
‣ What is platinum’s melting point?

Melting point: 2041.4 K (1768.3 °C, 3214.9 °F)
‣ What is platinum’s boiling point?

Boiling point: 4098 K (3825 °C, 6917 °F)
‣ How many electron shells does platinum have?

Electrons per shell: 2, 8, 18, 32, 17, 1
‣ What is the correct electron configuration for platinum?

Electron configuration: [Xe] 4f14 5d9 6s1
‣ What is the ionization energy of platinum?

Ionization energies:
1st: 870 kJ/mol
2nd: 1791 kJ/mol
‣ What phase is platinum at room temp?

Phase (at r.t): solid
‣ What is platinum’s density?

Density (near r.t): 21.45 g/cm3
when liquid (at m.p): 19.77 g/cm3
Platinum magnetic ordering: paramagnetic
Platinum natural occurrence: primordial
‣ What is the oxidation state of platinum (pt)?

Oxidation state: +2, +4
‣ What’s the electronegativity of platinum?

Electronegativity: Pauling scale: 2.28
Platinum poisson’s ratio: 0.38
Platinum heat of fusion: 22.17 kJ/mol
Platinum heat of vaporization: 510 kJ/mol
Platinum molar heat capacity: 25.86 J/(mol K)
Platinum molar magnetic susceptibility: +201.9 × 10-6 cm3/mol (290 K)
Speed of sound in platinum: 2800 m/s (at r.t)
‣ What is the crystal structure of platinum?

Crystal structure: face-centered cubic (fcc)
Thermal expansion of platinum: 8.8 µm/(m.K) (at 25 °C)
Thermal conductivity of platinum: 71.6 W/(m.K)
Platinum electrical resistivity: 105 nΩ.m (at 20 °C)
‣ What is the hardness of platinum?

Mohs hardness: 3.5
Vickers hardness: 400-550 MPa
Brinell hardness: 300-500 MPa
Platinum tensile strength: 125-240 MPa
Young’s modulus of platinum: 168 GPa
Shear modulus of platinum: 61 GPa
Bulk modulus of platinum: 230 GPa
Platinum CAS number: 7440-06-4

‣ Platinum vapor pressure

Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)2330(2550)2815314335564094

‣ How many isotopes does platinum have?

Main isotopes of platinum
IsotopeAbundanceHalf-life (t1/2)Decay modeProduct
190Pt0.012 %6.5 × 1011 yα186Os
192Pt0.782 %stable
193Ptsyn50 yε193Ir
194Pt32.864 %stable
195Pt33.775 %stable
196Pt25.211 %stable
198Pt7.356 %stable

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