Alkali metal

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Any of the soft, light, reactive metals of Group 1 of the periodic table; lithium, sodium, potassium, rubidium, cesium, and francium.
  2. 2
    any of the monovalent metals of group I of the periodic table (lithium or sodium or potassium or rubidium or cesium or francium) wordnet