Multiple Choice
What percentage of the human body weight is made up of oxygen?
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A proton ___________:
The average oxygen atom has a mass number of 16 and an atomic number of 8. This means that the number of neutrons in this oxygen atom is:
How many valence electrons does an atom with five total electrons have?
Which of the following is true about electron energy shells?
A neon atom (Ne) is unreactive for which of the following reasons?
How many electrons does an Oxygen atom need to fulfill the octet rule by filling its valence shell?