Element 12 of Periodic table is
Magnesium with atomic number 12,
atomic weight 24.305.
Magnesium, symbol Mg, has a
Simple Hexagonal structure and Silver color.
Magnesium is a alkaline earth metal element.
Trivial name of Magnesium is alkaline earth metals*.
Know everything about Magnesium Facts, Physical Properties, Chemical
Properties, Electronic configuration, Atomic and Crystal Structure.
Magnesium is a chemical element with symbol Mg and atomic number 12. It is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (Group 2, or alkaline earth metals) of the periodic table:they each have the same electron configuration in their outer electron shell producing a similar crystal structure. Magnesium is the ninth most abundant element in the universe.
Read key information and facts about element Magnesium
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
12 to find Magnesium 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 Magnesium on periodic
table look for cross section of group 2 and period
3 in the modern periodic table.
Interactive Periodic Table to Understand
and Learn Cool Trends
The element Magnesium was discovered by Joseph Black in year
1755 in United Kingdom
derived its name from Magnesia, a district of Eastern Thessaly in Greece
The table below shows the abundance of Magnesium in Universe, Sun, Meteorites,
Earth's Crust, Oceans and Human Body.
The solid state structure of Magnesium is Simple Hexagonal.
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.
Magnesium atoms have 12 electrons and
the electronic shell structure is [2, 8, 2] with Atomic Term Symbol (Quantum Numbers) 1S0.
Shell Structure of Magnesium - Electrons per energy
The ground state electronic configuration of Neutral Magnesium atom is
The portion of Magnesium configuration that is equivalent to the noble gas of
the preceding period, is abbreviated as [Ne]. 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 3s2, electrons in
the outermost shell that determine the chemical properties of the element.
Complete ground state electronic configuration for the Magnesium atom, Unabbreviated electronic configuration
1s2 2s2 2p6 3s2
Magnesium atomic radius is 145 pm, while it's covalent radius is 130 pm.
The electron affinity of Magnesium is 0 kJ/mol
Refer to table below for Ionization energies of Magnesium
Refer to below table for Magnesium Physical Properties
Magnesium is Conductor of electricity. Refer to
below for the Electrical properties of Magnesium
Refer to table below for Thermal properties of Magnesium
Isotopes of rhodium. Naturally occurring Magnesium has
3 stable isotope -
24Mg, 25Mg, 26Mg.
List of unique identifiers to search the element in various chemical registry databases