The atomic mass of the chemical element in period 2, group 13 is: 26.982 u
A periodic table can be defined as an organized tabular array of all the chemical elements typically arranged in order of increasing atomic number (in rows).
Basically, a periodic table comprises eighteen (18) columns and seven (7) rows.
Groups, families of elements are represented by the vertical rows on the periodic table while the periods of chemical elements are represented by the horizontal columns.
On the periodic table, the chemical element that is found in period 2, group 13 is Aluminum (Al) with an atomic number of 13 i.e it has 13 protons.
In conclusion, the atomic mass of Aluminum (Al) is 26.982 u and it is found in period 2, group 13 of the periodic table.
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