Question: what are the chemical properties of einsteinium?
Answer: Atomic number (number of protons in the nucleus): 99.
Atomic symbol (on the Periodic Table of Elements): Es.
Atomic weight (average mass of the atom): 252.
Density: Unknown.
Phase at room temperature: solid.
Melting point: 1,580 degrees Fahrenheit (860 degrees Celsius)
Boiling point: Unknown.