Question

this is a timed test. you will get to use your chemistry ref. tables, a scientific calculator, a pen/pencil, & scratch paper. question 16 1 pts how many neutrons would (^{16}_{8}o^{- 2}) have: 18 8 6 10

Explanation:

Step1: Recall atomic notation meaning

In $^{16}_{8}O^{2 -}$, the superscript 16 is the mass - number ($A$) and the subscript 8 is the atomic number ($Z$).

Step2: Use neutron - number formula

The number of neutrons ($N$) is calculated by the formula $N=A - Z$. Here, $A = 16$ and $Z = 8$. So $N=16 - 8$.

Step3: Calculate the result

$N = 8$.

Answer:

8