Elements
73

Ta

Tantalum

Tantalum (Ta) is a gray coloured metal that has the atomic number 73 in the periodic table. It is a Transition metal in Group 5. It has the symbol Ta.

Tantalum is a blue gray very hard metal that has the fourth highest melting point of metallic elements. It was discovered in 1802 by the Swedish scientist Anders Ekberg. It was also discovered by Charles Hatchett who called it Columbium. It is vey rare in the earth’s crust and is found in a variety of minerals, the most important being Tantalite. Tantalums isotope Ta-180 is one of the rarest in the universe. Most Tantalum is used for powdering on electronic equipment and also as an alloy for its anti corrosion properties. It is a solid metal at room temperature with a melting point of 3017°c and a boiling point of 5457°c.

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FAQ's

What is the Melting Point for Tantalum?

Tantalum has a Melting Point of 2996°F, meaning at 2996°F it will turn to a liquid.

What is the Boiling Point for Tantalum?

Tantalum has a Boiling Point of 5425°F, meaning at 5425°F it will turn to a Gas.

What is the Electronegativity of Tantalum?

Tantalum's Electronegativty is 1.5. Electronegativity is a measure of how strongly atoms attract bonding electrons to themselves.

What is the Heat of Vaporization of Tantalum?

Tantalum has a Heat of Vaporization of 743 kJ/mol.

Uses

Often used as an economical substitute for platinum. Tantalum pentoxide is used in capacitors and in camera lenses to increase refracting power. It and its alloys are corrosion and wear resistant so it is used to make surgical and dental tools.

Sources

Chiefly occurs in the mineral tantalite. Always found with niobium.

73
Protons
73
Electrons
108
Neutrons

Ta

Element Symbol
Ta
Atomic Weight
180.948
Atomic Number
73
State
Solid
Melting Point
Unknown
2996
°C
Boiling Point
5425
Unknown
°C
Heat of Vaporization
743
Unknown
kJ/mol
Crystal Structure
Cubic: Body centered
Thermoconductivity
0.575
Unknown
W/cmK
Shells
2,8,18,32,11,2
Group
Transition Metal
Period
6
Block
D Block
Orbitals
[Xe] 4f14 5d3 6s2
Coefficient of Thermal Expansion
6.3 10^-6 K^-1
Covalent Radius
1.34 Å
Density at 293K
16.6 g/cm³
Electrical Conductivity
0.0761 10^6/cm ohm
First Ionization Potential
7.89 V
Second Ionization Potential
--
Third Ionization Potential
--
Ionic Radius
.64 (+5) Å
Oxydation States
5
Lattice Parameter
3.298 Å
Lattice Parameter 2
--
Lattice Parameter 3
4.3193 Å
Pronounced

TAN-te-lem

Discovered by

Anders Ekeberg

Discovery date

1802

Orbital configuration
2,8,18,32,11,2

Download the Periodic Table

Explore Other Transition Metals

101.07
44

Ru

Ruthenium
63.546
29

Cu

Copper
88.906
39

Y

Yttrium
95.95
42

Mo

Molybdenum
195.084
78

Pt

Platinum
54.938
25

Mn

Manganese
44.956
21

Sc

Scandium
190.23
76

Os

Osmium
270
107

Bh

Bohrium
97
43

Tc

Technetium
102.905
45

Rh

Rhodium
47.867
22

Ti

Titanium
92.906
41

Nb

Niobium
55.845
26

Fe

Iron
270
105

Db

Dubnium
186.207
75

Re

Rhenium
269
106

Sg

Seaborgium
107.868
47

Ag

Silver
200.592
80

Hg

Mercury
196.967
79

Au

Gold
58.693
28

Ni

Nickel
91.224
40

Zr

Zirconium
50.942
23

V

Vanadium
183.84
74

W

Tungsten
270
108

Hs

Hassium
106.42
46

Pd

Palladium
267
104

Rf

Rutherfordium
65.38
30

Zn

Zinc
285
112

Cn

Copernicium
112.414
48

Cd

Cadmium
51.996
24

Cr

Chromium
192.217
77

Ir

Iridium
58.933
27

Co

Cobalt
178.49
72

Hf

Hafnium
Transition metal is any of various chemical elements that have valence electrons (electrons that can participate in the formation of chemical bond) in two shells instead of only one. They form group 3 (IIIb) through group 12 (IIb).
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