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Niobium is a lustrous, grey, ductile, paramagnetic metal in group 5 of the periodic table (see table), with an electron configuration in the outermost shells atypical for group 5. Similarly atypical configurations occur in the neighborhood of ruthenium (44) and rhodium (45). [35]
The periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows ... Cadmium 48 Cd 112.41:
Like the periodic table, the list below organizes the elements by the number of protons in their atoms; it can also be organized by other properties, such as atomic weight, density, and electronegativity. For more detailed information about the origins of element names, see List of chemical element name etymologies.
This list of chemical elements named after places includes elements named both directly and indirectly for places. 41 of the 118 chemical elements have names associated with, or specifically named for, places around the world or among astronomical objects.
41 Niobium: List: 80 Nb 81 Nb 82 Nb 83 Nb 84 Nb 85 Nb 86 Nb 87 Nb 88 Nb 89 Nb 90 Nb 91 Nb 92 Nb 93 Nb 94 Nb 95 Nb 96 Nb 97 Nb 98 Nb 99 Nb 100 Nb 101 Nb 102 Nb 103 Nb 104 Nb 105 Nb 106 Nb 107 Nb 108 Nb
This is a list of chemical elements and their atomic properties, ordered by atomic number (Z).. Since valence electrons are not clearly defined for the d-block and f-block elements, there not being a clear point at which further ionisation becomes unprofitable, a purely formal definition as number of electrons in the outermost shell has been used.
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Technetium is located in the group 7 of the periodic table, between rhenium and manganese. As predicted by the periodic law , its chemical properties are between those two elements. Of the two, technetium more closely resembles rhenium, particularly in its chemical inertness and tendency to form covalent bonds . [ 33 ]