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Glite Dictionary
atomic number 105

atomic number 105

8.5
An element called dubnium with symbol Db and atomic number 105
  • noun
  • /əˈtɑːmɪk ˈnʌmbər 105/
  • Specialized
translation icon : número atómico 105
  • The atomic number 105 refers to the element dubnium.

Examples

  • The symbol Db is used to represent atomic number 105 on the periodic table.

  • The properties of atomic number 105 make it of interest mainly to scientists studying superheavy elements.

  • Researchers first synthesized atomic number 105 in the 1960s in Russia and the United States.

  • Scientists have been studying atomic numbers 105 and 106 for years.

  • Researchers first synthesized atomic number 105 in the 1960s in Russia and the United States.

  • The properties of atomic number 105 make it of interest mainly to scientists studying superheavy elements.

  • The symbol Db is used to represent atomic number 105 on the periodic table.

Synonyms

Db
vsatomic number 105
  • Specialized
10 9.6

A man-made radioactive metal with atomic number 105

uses words to identify the same element instead of a symbol
element 105
vsatomic number 105
  • Specialized
9.8

A man-made chemical element made in labs with number 105 called dubnium

identifies the same item by its proper name rather than the number
dubnium
vsatomic number 105
  • Specialized
9.9

A radioactive chemical element made in laboratories with atomic number 105

gives only the simple identification without technical details
hahnium
vsatomic number 105
  • Archaic
9.9

An old name for element 105 that is now called dubnium

is the modern official name replacing that former label

Surface Forms

atomic number 105 singular
atomic numbers 105 plural

Morphology

atomic + number + 105

The phrase is fully compositional: 'atomic' (relating to atoms) + 'number' + the numeral '105' straightforwardly yields 'the number identifying an element with 105 protons.' A B1 learner who knows the constituent words and the numeral can infer it refers to the chemical element assigned the number 105 (even if they don't know the name dubnium); this scientific naming pattern is standard and cross-linguistically familiar.

Etymology

Atomic number 105 combines atomic (about atoms) and number (a count). It names the element whose atoms have 105 tiny parts called 'protons', and that element is called 'dubnium' after the town Dubna where scientists first made it, so atomic number 105 today means the element 'dubnium'.