How many valence electrons does each atom of arsenic (As) have? Arsenic is element 33. It is in period 4 and family 15 (5A or the Nitrogen family).
Each atom of arsenic (As) has 5 valence electrons.
To determine the number of valence electrons for an atom of arsenic (As), we need to consider its position in the periodic table.
Arsenic is located in period 4 and family 15 (also known as group 5A or the Nitrogen family).
The number of valence electrons for elements in group 15 is equal to their group number minus 10. Since arsenic is in group 15, its group number is 15.
Therefore, the number of valence electrons for an atom of arsenic is:
15 - 10 = 5
Hence, each atom of arsenic (As) has 5 valence electrons.