Here you can read more about the chemical element Bohrium. Its shemical symbol is Bh and its atomic number is 107. The relative atomic mass of Bohrium is 270 u. The elemental classification of Bohrium is Transition metals, and it belongs to group 7 and period 7 in the Periodic Table of Elements.
Bohrium was discovered in the year 1981 by Gesellschaft für Schwerionenforschung.
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 Bohrium ordered in tabular form, which might be easier to read and use if you want to quantify it in some sort.