Definition

Noun: A hard, brittle, grey, polyvalent metallic element that resembles iron but is not magnetic. It is used in making steel and occurs in many minerals. This is the scientific term for the chemical element manganese.

Usage

The term "atomic number 25" is used primarily in scientific, technical, and educational contexts to specify the element manganese by its fundamental property—the number of protons in its nucleus. * In chemistry, atomic number 25 defines the element's position on the periodic table. * The symbol for atomic number 25 is Mn.

Examples

• The steel's strength was increased by adding a small percentage of atomic number 25.
• Atomic number 25 is essential for many biological processes in plants and animals.
• On the periodic table, atomic number 25 is located between chromium and iron.

Advanced Usage

• Isotopes: The most stable isotope of atomic number 25 is Mn-55.
• Chemical Context: In a redox reaction, compounds of atomic number 25 can act as powerful oxidizing agents.

Variants and Related Words

• Manganese (n): The common name for atomic number 25.
• Mn (n): The chemical symbol for atomic number 25.

Synonyms

• Manganese
• Mn (as a noun referring to the element)

Related Phrases and Terms

• Manganese dioxide (MnO₂): A common compound of atomic number 25, used in dry-cell batteries.
• Trace element: Atomic number 25 is a vital trace element in nutrition.

Noun

1. a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals