Magnesium (Mg) – Periodic Table [Element Information & More]

Magnesium element (Mg) is in group 2 and period 3 of a periodic table. Magnesium is in the s-block and it is classified as an alkaline earth metal on the periodic table.

There is a lot more information related to magnesium which is mentioned in the Information Table given below.

So let’s dive right into it!

Table of contents

• Magnesium element (Information Table)
• Magnesium element in Periodic table
• Facts about Magnesium
• Properties of Magnesium
• Uses of Magnesium

Magnesium Element (Information Table)

The important data related to magnesium element is given in the table below.

Appearance of magnesium	Shiny gray
Atomic number of magnesium	12
Symbol of magnesium	Mg
Atomic mass of magnesium	24.305 u
Protons, Neutrons & Electrons in magnesium	Protons: 12, Neutrons: 12, Electrons: 12
State of magnesium (at STP)	Solid
Group number of magnesium in periodic table	2
Period number of magnesium in periodic table	3
Block of magnesium in periodic table	s-block
Category of magnesium	Alkaline earth metals
Bohr model or Electrons per shell or Electrons arrangement in magnesium	2, 8, 2
Electron configuration of magnesium	[Ne] 3s2
Orbital diagram of magnesium
Valence electrons in magnesium	2
Electronegativity of magnesium (on pauling scale)	1.31
Atomic radius of magnesium (van der Waals radius)	173 picometers
Density of magnesium	1.74 g/cm3
1st ionization energy of magnesium	7.646 eV
Main isotope of magnesium	24Mg
Melting point of magnesium	923 K or 650 °C or 1202 °F
Boiling point of magnesium	1363 K or 1091 °C or 1994 °F
Crystal structure of magnesium	Hexagonal Closed Packing (HCP)
Discovery of magnesium	By Joseph Black in 1755

Also see: Interactive Periodic Table (It has rotating bohr models as well as many other details of all the 118 elements in a single periodic table).

Magnesium element in Periodic table

The Magnesium element (Mg) has the atomic number 12 and is located in group 2 and period 3. Magnesium is in solid state at STP and it is classified as an alkaline earth metal on the periodic table.

Click on above elements in the periodic table to see their information.

Facts about magnesium

Here are a few interesting facts about magnesium element.

1. The name magnesium comes from the Greek region “Magnesia”.
2. Magnesium element is found from the sea as well as from the earth’s crust.
3. The magnesium element is the 8^th most abundant element present in the earth’s crust.
4. Magnesium is the 11^th most abundant element (by mass) in the human body.
5. Around 60% of the total magnesium in the human body is present in the skeleton.
6. Magnesium is present in the center of the chlorophyll and it is important for photosynthesis.
7. Magnesium is also an important element for the human body which performs the biochemical reactions.

Properties of magnesium

Here is a list of some physical properties and chemical properties of magnesium.

Physical properties of magnesium

• Magnesium has a shiny-gray appearance and is a solid metal.
• Magnesium is light-weight and soft metal.
• The magnesium metal has a density of 1.74 g/cm³ which is 2/3^rd the density of aluminum.
• The magnesium forms an alloy with 1% aluminum which increases the ductility of the alloy.
• The melting point and boiling point of magnesium are 650 °C and 1091 °C respectively.

Chemical properties of magnesium

• Magnesium forms a thin oxide layer on its surface when kept open in the air.
• Magnesium is a reactive metal and hence it is always found as a compound with other elements in the earth’s crust.
• When magnesium metal (or a magnesium metal strip) is submerged in water, it liberates the hydrogen gas.
• Magnesium gives a bright white light when exposed to fire.
• Magnesium easily reacts with acids and liberates heat during the reaction.

Uses of magnesium

Here are some uses of the magnesium element.

• Magnesium is used as an alloying metal with aluminum and it gives light and strong metal which is used in car bodies, drinking cans, etc.
• Some other lightweight alloys are also prepared by mixing magnesium with zinc, silicon and manganese.
• Magnesium hydroxide is a compound of magnesium which is used in manufacturing fire resistant plastics.
• Magnesium is also needed by the human body for biochemical reactions.
• Magnesium is also used in fireworks and flares.

External resources:

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