How many valence electrons are in arsenic (As)?
Understand the Problem
The question asks for the number of valence electrons in arsenic (As). To find this, we can refer to the periodic table and see that arsenic is in group 15, which indicates it has 5 valence electrons.
Answer
5 valence electrons
The final answer is 5 valence electrons.
Answer for screen readers
The final answer is 5 valence electrons.
More Information
Arsenic (As) is in Group 15 of the periodic table and its electron configuration is [Ar] 3d10 4s2 4p3. The 5 electrons in the 4s and 4p orbitals are the valence electrons.
Tips
One common mistake is to count electrons in lower energy levels (like the 3d10 electrons) which are actually core electrons, not valence electrons.
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