Element 42 of Periodic table is
Molybdenum with atomic number 42,
atomic weight 95.94.
Molybdenum, symbol Mo, has a
Body Centered Cubic structure and Gray color.
Molybdenum is a transition metal element.
Know everything about Molybdenum Facts, Physical Properties, Chemical
Properties, Electronic configuration, Atomic and Crystal Structure.
Molybdenum is a chemical element with symbol Mo and atomic number 42. The name is from Neo-Latin molybdaenum, from Ancient Greek Μόλυβδος molybdos, meaning lead, since its ores were confused with lead ores. Molybdenum minerals have been known throughout history, but the element was discovered (in the sense of differentiating it as a new entity from the mineral salts of other metals) in 1778 by Carl Wilhelm Scheele.
Read key information and facts about element Molybdenum
Explore our interactive periodic table
Periodic table is arranged by atomic number, number of protons in the nucleus which is same as number of
The atomic number increases from left to right. Periodic table starts at top left ( Atomic number 1) and
ends at bottom right (atomic number 118). Therefore you can directly look for atomic number
42 to find Molybdenum on periodic table.
Another way to read periodic table and locate an element is by using group number (column)
and period number (row). To locate Molybdenum on periodic
table look for cross section of group 6 and period
5 in the modern periodic table.
Interactive Periodic Table to Understand
and Learn Cool Trends
The element Molybdenum was discovered by Carl Wilhelm Scheele in year
1781 in Sweden
derived its name from the Greek word molybdos meaning 'lead'
The table below shows the abundance of Molybdenum in Universe, Sun, Meteorites,
Earth's Crust, Oceans and Human Body.
The solid state structure of Molybdenum is Body Centered Cubic.
The Crystal structure can be described in terms of its unit Cell. The unit Cells repeats itself in
dimensional space to form the structure.
The unit cell is represented in terms of its lattice parameters, which are the lengths of the cell
Lattice Constants (a, b and c)
and the angles between them Lattice Angles (alpha, beta and gamma).
The positions of the atoms inside the unit cell are described by the set of atomic positions (
xi, yi, zi) measured from a reference lattice point.
The symmetry properties of the crystal are described by the concept of space groups. All possible
symmetric arrangements of particles in three-dimensional space are described by the 230 space groups
(219 distinct types, or 230 if chiral copies are considered distinct.
Molybdenum atoms have 42 electrons and
the electronic shell structure is [2, 8, 18, 13, 1] with Atomic Term Symbol (Quantum Numbers) 7S3.
Shell Structure of Molybdenum - Electrons per energy
The ground state electronic configuration of Neutral Molybdenum atom is
[Kr] 4d5 5s1.
The portion of Molybdenum configuration that is equivalent to the noble gas of
the preceding period, is abbreviated as [Kr]. For atoms with many electrons, this
notation can become lengthy and so an abbreviated notation is used.This is important as it is
the Valence electrons 4d5 5s1, electrons in
the outermost shell that determine the chemical properties of the element.
Complete ground state electronic configuration for the Molybdenum atom, Unabbreviated electronic configuration
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d5 5s1
Molybdenum atomic radius is 190 pm, while it's covalent radius is 145 pm.
The electron affinity of Molybdenum is 71.9 kJ/mol
Refer to table below for Ionization energies of Molybdenum
Refer to below table for Molybdenum Physical Properties
Molybdenum is Conductor of electricity. Refer to
below for the Electrical properties of Molybdenum
Refer to table below for Thermal properties of Molybdenum
Isotopes of rhodium. Naturally occurring Molybdenum has
6 stable isotope -
92Mo, 94Mo, 95Mo, 96Mo, 97Mo, 98Mo.
List of unique identifiers to search the element in various chemical registry databases