Question

1. how many neutrons are in a fluorine atom with an atomic number of 9 and a mass number of 17? 9 2 17 8

Explanation:

Step1: Recall the formula for calculating neutrons

The formula is \( \text{Number of neutrons}=\text{Mass number}-\text{Atomic number} \).

Step2: Substitute the given values

Given that the atomic number \( Z = 9 \) and the mass number \( A=17 \). Then \( \text{Number of neutrons}=17 - 9\).

Step3: Calculate the result

\(17-9 = 8\).

Answer:

8 (the fourth option)