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25 Mn
Element Revision Sheet

Manganese (Mn)

Transition Metals Block D Group 7 • Period 4
Superhero Identity

"Meet Mn-Force, the ultimate alloy architect and life's silent strength! This metallic marvel toughens steel, electrifies your gadgets, and keeps your body firing on all cylinders."

A memorable persona to anchor Mn in your mind.

Density

7.21

Grams per cm³

Melting Point

1246

Celsius (°C)

Atomic Radius

197

Radius (pm)

Everyday Connection

Daily Life Link

The secret ingredient in your bike's super-strong frame and the invisible helper making your smartphone battery last longer.

Discovery & History

Year Discovered

1774

Discovered By

Johan Gottlieb Gahn

Origin of Name

"The name Manganese comes from either the Latin for magnet (magnes) or from black magnesium oxide (magnesia nigra)"

Technical Properties

Atomic Mass

54.938 u

Standard State

solid

Boiling Point

2060°C

Electron Configuration

[Ar] 3d54s2

1st Ionization Energy

7.434 eV

Electron Affinity

N/A

Oxidation States

[+2 +3 +4 +6 +7]
Appearance

"A hard, silvery-gray metal with a steely glint, but don't let its looks fool you – pure Mn is surprisingly brittle!"

Did You Know?

1

Steel's Secret Weapon: Around 90% of all manganese helps transform iron into super-strong, rust-resistant steel – it's the ultimate alloy wingman!

2

The Purple Power: That dazzling purple in amethyst gemstones? Often thanks to tiny manganese impurities giving quartz its regal hue!

3

Battery's Best Friend: Manganese dioxide is a key player in common alkaline dry-cell batteries, powering everything from remote controls to flashlights.

4

Life's Essential Spark: Your body needs tiny, precise amounts of manganese for critical functions like bone development, metabolism, and even brain health!

Ready to Test Your Knowledge?