6. Oxygen has an atomic number of 8. What can you

conclude from this fact?

a. An atom of oxygen weighs 8 grams.

b. An atom of oxygen has 4 protons and 4 electrons.

c. An atom of oxygen has 8 positrons.

d. An atom of oxygen has 8 protons.

Oxygen has an atomic number of 8,

Then, it has eight electrons revolving round its nucleus.

And since it a neutral atoms.

Number of neutron ≈ number of electron

Number of proton = Number of electron.

Then, the number of proton is 8

So, we can find it mass number of molecular weight

Molecular weight = number of proton + number of neutron

Molecular weight = 8 + 8

Molecular weight = 16g/mol

So, the correct answer is D

An atom of oxygen has 8 protons.