atomic number 63

Thân thiện

A scientist points to the atomic number 63 on a large, colorful periodic table poster.

Definition

1. Noun:
   • A bivalent and trivalent metallic element of the rare earth group: This is the chemical element with the symbol Eu and atomic number 63. It is a moderately hard, silvery metal that is part of the lanthanide series.

Usage Examples

• Noun:
  • Europium, atomic number 63, is used in the phosphors of television screens.
  • The sample was analyzed and found to contain traces of atomic number 63.

Advanced Usage

• Scientific Context: The term "atomic number 63" is primarily used in scientific, technical, and educational contexts to specify the element europium by its fundamental property—the number of protons in its nucleus.
  • In the periodic table, atomic number 63 falls between samarium (62) and gadolinium (64).

Variants and Related Words

• Europium (Eu): This is the common name for the element represented by atomic number 63.
  • Europium is the most reactive rare earth element.

Synonyms

• Europium: The standard name for the element.
• Eu: The chemical symbol.

Notes on Meaning

• The term "atomic number 63" has a single, precise meaning in chemistry and physics, referring exclusively to the element europium. It is not used in idiomatic or figurative language.

Học thuật

Noun

1. a bivalent and trivalent metallic element of the rare earth group

Từ đồng nghĩa

• europium
• Eu