Question

8
O
Oxygen
15.999

Atomic number
atomic mass
# of protons
# of neutrons
# of electrons

Answer 1

Here is the requested information for the element Oxygen (O):

- **Atomic Number**: 8
- **Atomic Mass**: 15.999 (though it is often approximated as 16)
- **# of Protons**: 8 (the atomic number is equal to the number of protons)
- **# of Neutrons**: 8 (approximately, since the atomic mass is roughly 16 - atomic number 8)
- **# of Electrons**: 8 (in a neutral atom, the number of electrons equals the number of protons)

### Summary for Oxygen (O):
- Atomic Number: 8
- Atomic Mass: 15.999
- # of Protons: 8
- # of Neutrons: 8
- # of Electrons: 8