How many neutrons are in arsenic-42?
A)33
B)41
C)42
D)41.9
E)75

Name: How many neutrons are in arsenic-42? A)33 B)41 C)42 D)41.9 E)75
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Quizplus · Accepted Answer

Arsenic has an atomic number of 33, meaning it has 33 protons. The mass number of arsenic-42 is 42, which includes the number of protons and neutrons. Therefore, the number of neutrons can be calculated by subtracting the atomic number from the mass number: 42 - 33 = 9. So, arsenic-42 has 9 neutrons.

How Many Neutrons Are in Arsenic-42