element 111

9.6

A very heavy radioactive metal made in labs that has very unstable atoms

noun

Specialized

: elemento 111

Few atoms of element 111 have ever been observed because of its short half-life.

Examples

Scientists have successfully synthesized element 111 in the laboratory.
The chemical properties of element 111 are not fully understood due to its instability.
The element 111 was discovered in 1994.
Scientists are studying the properties of element 111.
Few atoms of element 111 have ever been observed because of its short half-life.
Scientists have successfully synthesized element 111 in the laboratory.
The chemical properties of element 111 are not fully understood due to its instability.

Synonyms

vselement 111

Specialized

1 9.9

A chemical symbol for roentgenium, a very unstable radioactive element

is written as the full name rather than an abbreviated symbol

roentgenium

vselement 111

Specialized

9.9

A very heavy radioactive element made by scientists in a lab

has identical meaning but uses the numeric label form

atomic number 111

vselement 111

Specialized

9.5

A radioactive metal element called roentgenium whose atoms have 111 protons

is the verbal name rather than the numeric identifier

Surface Forms

element 111 singular

elements 111 plural

Morphology

element + 111

The phrase is compositionally transparent: a learner who knows 'element' and can read the numeral '111' will infer it denotes the chemical element with atomic number 111 (i.e. element number 111). Numbers used as identifiers for chemical elements are a common, cross-linguistic convention, so the meaning is directly derivable from the constituents.

Etymology

Element 111 is now called roentgenium, named after Wilhelm Röntgen, the scientist who discovered X-rays. So, because this element is made by scientists and lasts only a short time, the name helps you remember it is a rare, 'radioactive' metal made in a lab.