Here you can read more about the chemical element Lawrencium. Its shemical symbol is Lr and its atomic number is 103. The relative atomic mass of Lawrencium is 266 u. The elemental classification of Lawrencium is Actinides, and it belongs to group 3 and period 7 in the Periodic Table of Elements.
Lawrencium was discovered in the year 1971 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 Lawrencium ordered in tabular form, which might be easier to read and use if you want to quantify it in some sort.