Periodic Table Element Comparison: Compare Elements - Technetium vs Lanthanum
Compare Technetium and Lanthanum
Compare Technetium and Lanthanum on the basis of their properties, attributes and periodic table facts. Compare elements on more than 90 properties. All the elements of similar categories show a lot of similarities and differences in their chemical, atomic, physical properties and uses. These similarities and dissimilarities should be known while we study periodic table elements. You can study the detailed comparison between Technetium vs Lanthanum with most reliable information about their properties, attributes, facts, uses etc. You can compare Tc vs La on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.
Facts
Name |
Atomic Number |
Atomic Symbol |
Atomic Weight |
Phase |
Color |
Classification |
Group in Periodic Table |
Group Name |
Period in Periodic Table |
Block in Periodic Table |
Electronic Configuration |
Melting Point |
Boiling Point |
Electronic Shell Structure |
CAS Number |
Neighborhood Elements |
Technetium |
43 |
Tc |
98 |
Solid |
Silver |
transition metal |
7 |
manganese family |
5 |
d |
[Kr] 4d5 5s2 |
2157 °C |
4265 °C |
2, 8, 18, 13, 2 |
CAS7440-26-8 |
Neighborhood Elements of Technetium |
Lanthanum |
57 |
La |
138.9055 |
Solid |
Silver |
lanthanide |
N/A |
6 |
f |
[Xe] 5d1 6s2 |
920 °C |
3464 °C |
2, 8, 18, 18, 9, 2 |
CAS7439-91-0 |
Neighborhood Elements of Lanthanum |
History
History |
The element Technetium was discovered by Emilio Segrè in year 1937 in Italy. Technetium derived its name from from the Greek tekhnètos meaning 'artificial' |
The element Lanthanum was discovered by Carl Gustaf Mosander in year 1839 in Sweden. Lanthanum derived its name derived its name from from the Greek lanthanein, meaning 'to lie hidden' |
Presence: Abundance in Nature and Around Us
N/A |
None |
None |
None |
None |
None |
2×10-7% |
2×10-7% |
2.8e-07 |
3.4e-05 |
3.4×10-10% |
N/A |
Crystal Structure and Atomic Structure
Atomic Radius |
Atomic Volume |
Covalent Radius |
Van der Waals Radius |
Neutron Cross Section |
Atomic Spectrum |
Lattice Constant |
Lattice Angle |
Space Group Name |
Space Group Number |
Crystal Structure |
183 pm |
8.5217391304348 cm3 |
156 pm |
N/A |
22 |
![]() |
273.5, 273.5, 438.8 pm |
π/2, π/2, 2 π/3 |
P63/mmc |
194 |
Simple Hexagonal ![]() |
195 pm |
22.600959973967 cm3 |
169 pm |
N/A |
8.98 |
![]() |
377.2, 377.2, 1214.4 pm |
π/2, π/2, 2 π/3 |
P63/mmc |
194 |
Simple Hexagonal ![]() |
Atomic and Orbital Properties
Atomic Number |
Number of Electrons (with no charge) |
Number of Protons |
Mass Number |
Number of Neutrons |
Shell structure (Electrons per energy level) |
Electron Configuration |
Valence Electrons |
Oxidation State |
Atomic Term Symbol (Quantum Numbers) |
Shell structure |
43 |
43 |
43 |
98 |
55 |
2, 8, 18, 13, 2 |
[Kr] 4d5 5s2 |
4d5 5s2 |
-3;-1 1;2;3;4;5;6;7 |
6S5/2 |
![]() |
57 |
57 |
57 |
138.9055 |
81.9055 |
2, 8, 18, 18, 9, 2 |
[Xe] 5d1 6s2 |
5d1 6s2 |
1;2;3 |
2D3/2 |
![]() |
Isotopes - Nuclear Properties
Isotopes |
Naturally occurring stable
isotopes: None. |
Naturally occurring stable
isotopes: 139La. |
Chemical Properties: Ionization Energies and electron affinity
6 |
1.9 |
53 kJ/mol |
702, 1470, 2850 kJ/mol |
3 |
1.1 |
48 kJ/mol |
538.1, 1067, 1850.3, 4819, 5940 kJ/mol |
Physical Properties
Density |
Molar Volume |
Elastic Properties |
Young Modulus |
Shear Modulus |
Bulk Modulus |
Poisson Ratio |
Hardness - Tests to Measure of Hardness of Element |
Mohs Hardness |
Vickers Hardness |
Brinell Hardness |
Electrical Properties |
Electrical Conductivity |
Resistivity |
Superconducting Point |
Heat and Conduction Properties |
Thermal Conductivity |
Thermal Expansion |
Magnetic Properties |
Magnetic Type |
Curie Point |
Mass Magnetic Susceptibility |
Molar Magnetic Susceptibility |
Volume Magnetic Susceptibility |
Optical Properties |
Refractive Index |
Acoustic Properties |
Speed of Sound |
11.5 g/cm3 |
8.5217391304348 |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
5×106 S/m |
2×10-7 m Ω |
7.8 |
51 W/(m K) |
N/A |
Paramagnetic |
N/A |
3.42×10-8 |
3.352×10-9 |
0.0003933 |
N/A |
N/A |
6.146 g/cm3 |
22.600959973967 |
37 GPa |
14 GPa |
28 GPa |
0.28 |
2.5 MPa |
491 MPa |
363 MPa |
1.6×106 S/m |
6.1×10-7 m Ω |
4.88 |
13 W/(m K) |
0.0000121 K-1 |
Paramagnetic |
N/A |
1.1×10-8 |
1.528×10-9 |
6.761e-05 |
N/A |
2475 m/s |
Thermal Properties - Enthalpies and thermodynamics
2157 °C |
4265 °C |
N/A |
7.8 |
23 kJ/mol |
550 kJ/mol |
N/A |
920 °C |
3464 °C |
N/A |
4.88 |
6.2 kJ/mol |
400 kJ/mol |
N/A |
Regulatory and Health - Health and Safety Parameters and Guidelines
CAS Number |
RTECS Number |
DOT Hazard Class |
DOT Numbers |
EU Number |
NFPA Fire Rating |
NFPA Hazards |
NFPA Health Rating |
NFPA Reactivity Rating |
More |
AutoIgnition Point |
Flashpoint |
CAS7440-26-8 |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
CAS7439-91-0 |
N/A |
4.1 |
3178 |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |
N/A |