The atomic number of Oxygen is:

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• C-03-Q107The atomic number of Hydrogen is:
• C-03-Q108If atomic number = 9, the element is:
• C-03-Q109The "ID number" of an element refers to its:
• C-03-Q110Since atoms are charge-neutral, the number of electrons equals the number of:
• C-03-Q111The atomic number of Potassium is:
• C-03-Q112The mass number of an atom is the total number of:
• C-03-Q113Mass number is denoted by:
• C-03-Q114The mass number of Sodium is:
• C-03-Q115Sodium has 11 protons. The number of neutrons in is: