Atomic Number 90 (Noun)
Meaning
A soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands.
Classification
Nouns denoting substances.
Examples
- The nucleus of the thorium atom contains an atomic number 90.
- Thorium's atomic number 90 places it in a key group of actinides with major applications in nuclear physics.
- A known property of this element is its relative atomic number 90 on the periodic table.
- Research proves thorium's properties make it suitable for an atomic number 90 power source in nuclear reactors.
- As thorium occupies atomic number 90 in the periodic table, the metal is valuable in a power generation context.