1. 钾
Potassium is a soft silvery-white chemical element, which occurs mainly in compounds. These compounds are used in making such things as glass, soap, and fertilizers.

1. a light soft silver-white metallic element of the alkali metal group
oxidizes rapidly in air and reacts violently with water
is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite

Synonym: Katomic number 19