The Periodic Table/99 - Einsteinium (Es)

Element Einsteinium (Es, 99)

Here you can read more about the chemical element Einsteinium. Its shemical symbol is Es and its atomic number is 99. The relative atomic mass of Einsteinium is 252 u. The elemental classification of Einsteinium is Actinides, and it belongs to group 3 and period 7 in the Periodic Table of Elements.

The density of Einsteinium is 13500 kg/m3. The melting point of Einsteinium is 1133 Kelvin (860 ℃). Einsteinium was discovered in the year 1952 by Lawrence Berkeley National Laboratory.

To the right (or below if you are using a mobile device with a smaller screen) you will find the information given above for the element Einsteinium ordered in tabular form, which might be easier to read and use if you want to quantify it in some sort.


Data about element Einsteinium

Chemical symbol
Es
Element classification
Actinides
Atomic number
99
Group
3
Period
7
Relativ atomic mass
Atomic mass
252 u
Density
13500 kg/m3
Melting point
1133 K   (860 ℃)
Discovered year
1952
Discovered by
Lawrence Berkeley National Laboratory