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This list includes 7 Chemical Elements that start with M, from “Magnesium” to “Moscovium”. They include common metals such as “Magnesium” and “Molybdenum” as well as synthetic elements like “Moscovium”. Main uses cover alloys, electronics, medicine, and catalysts.

Chemical Elements that start with M are a mix of abundant, industrially useful metals and rare synthetic elements. Notably, “Mendelevium” honors Dmitri Mendeleev and “Meitnerium” commemorates physicist Lise Meitner.

Below you’ll find the table with Atomic number, Atomic weight, and Discovery year.

Element: The name of each element, written as you see on the periodic table, so you can identify it quickly.

Atomic number: The whole-number count of protons in the nucleus, which helps you place the element in order.

Atomic weight: The standard atomic mass to three decimals, giving you a consistent value for comparisons and calculations.

Discovery year: The year or era when the element was first isolated or reported, useful for historical context.

Chemical Elements that start with M

NameAtomic numberStandard atomic weightDiscovery year
Magnesium1224.3051808 (NIST)
Manganese2554.9381774 (NIST)
Molybdenum4295.9501778–1781 (NIST)
Mercury80200.592Antiquity (NIST)
Mendelevium101N/A1955 (IUPAC)
Meitnerium109N/A1982 (IUPAC)
Moscovium115N/A2003 (IUPAC)

Descriptions

Magnesium
Natural alkaline earth metal, named from “magnesia”; light and reactive, used in alloys, fireworks and as a supplement; metal isolated by Humphry Davy.
Manganese
Natural transition metal, name linked to “magnesia”; gray, hard metal essential for steelmaking and some batteries; common in minerals and industrial use.
Molybdenum
Natural transition metal, name from Greek “molybdos” (lead-like); very high melting point, used in steel alloys and catalysts for strength and heat resistance.
Mercury
Natural heavy metal that is liquid at room temperature, named for the Roman god Mercury; historically used in thermometers and gold extraction but is toxic.
Mendelevium
Synthetic actinide named for Dmitri Mendeleev; produced in particle accelerators, radioactive and short-lived, used only in scientific research.
Meitnerium
Synthetic transactinide named for physicist Lise Meitner; created in laboratories, extremely short-lived with no practical applications.
Moscovium
Synthetic superheavy element named after the Moscow region; produced in tiny amounts in nuclear reactions and highly unstable.
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