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Glite Dictionary
Pm

Pm

9.9
A soft silvery metal from the rare earth group that gives off radiation and has no stable forms
  • noun
  • Specialized
translation icon : Pm
  • The chemical symbol for promethium is Pm.

Examples

  • There are no stable isotopes of Pm found in nature.

  • The element Pm was discovered as a product of uranium fission.

  • Scientists used Pm as a radioactive tracer in their experiments.

  • You can find Pm in certain nuclear reactors.

  • The chemical element Pm is primarily used in luminous paints and atomic batteries.

  • You won't find any stable isotopes of Pm among the rare earth elements.

  • Researchers identified Pm in the samples collected from the nuclear reactor.

Synonyms

promethium
vsPm
  • Specialized
1 9.9

A rare silvery metal that is radioactive and used in glow paint for watches

is named by its chemical symbol rather than by the full name
atomic number 61
vsPm
  • Specialized
9.9

A soft silver metal from the rare earth group that is radioactive and has no stable forms

is named by its chemical symbol rather than by its atomic number

Surface Forms

Pm singular
Pms plural

Etymology

Pm is the chemical symbol for the element promethium, which is named after the Greek hero Prometheus, who 'stole fire' for people. Scientists chose the name because the element is radioactive and gives off energy like fire, so the Prometheus story helps you remember its fiery power.