Atomic Number 19 (Noun)
Meaning
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.
Classification
Nouns denoting substances.
Examples
- Potassium is the chemical element with the atomic number 19 and is represented by the symbol K.
- The atomic number 19 of potassium indicates that it has 19 protons in the nucleus of an atom.
- The atomic number 19 element is highly reactive and can ignite spontaneously in air at room temperature.
- The atomic number 19, also known as potassium, is often used in agriculture as a fertilizer due to its essential role in plant growth.
- The atomic number 19 is an important component of many biological systems and is necessary for various cellular functions in the human body.