Question

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). (1 point) 4 33 15 5

Explanation:

Step1: Recall valence - electron rule for main - group elements

For main - group elements (groups 1 - 2 and 13 - 18), the number of valence electrons is equal to the group number's last digit.

Step2: Identify the group of arsenic

Arsenic is in group 15 (5A).

Step3: Determine the number of valence electrons

The last digit of group 15 is 5, so arsenic has 5 valence electrons.

Answer:

5