rg

Thân thiện

A scientist carefully handles a sample of rg in the laboratory.

Definition

1. Noun:
   • A radioactive transuranic element: "Rg" is the chemical symbol for the element roentgenium, a synthetic, highly radioactive metallic element with atomic number 111.

Usage Examples

• Noun:
  • The element Rg was first synthesized in a laboratory in 1994.
  • Scientists study the properties of Rg to understand more about heavy elements.

Advanced Usage

• Scientific Notation: "Rg" is used almost exclusively in scientific contexts, particularly in chemistry and physics, to denote the element roentgenium in formulas, tables, and discussions.
  • The periodic table lists Rg in group 11.

Variants and Related Words

• Roentgenium (n): The full name of the element for which "Rg" is the symbol.
  • Roentgenium is named after the physicist Wilhelm Röntgen.

Synonyms

• Element 111: A synonym referring to its atomic number.
• Roentgenium: The full name of the element.

Notes on Usage

• "Rg" is a specific scientific symbol. It is not used in everyday language and has no idiomatic expressions or phrasal verbs associated with it.
• It is always capitalized.

Học thuật

Noun

1. a radioactive transuranic element

Từ đồng nghĩa

• roentgenium
• Rg
• element 111
• atomic number 111