Question

question 3 oxygen has protons neutrons electrons

Explanation:

Step1: Identify atomic number

The atomic number of an element is equal to the number of protons. For oxygen, the atomic number is 8, so the number of protons is 8.

Step2: Calculate number of neutrons

The mass - number is approximately 16 (rounded from 15.999). The mass - number is the sum of protons and neutrons. So the number of neutrons is mass - number - number of protons, which is $16 - 8=8$.

Step3: Determine number of electrons

In a neutral atom, the number of electrons is equal to the number of protons. So oxygen has 8 electrons.

Answer:

Protons: 8
Neutrons: 8
Electrons: 8