What must occur for this ion to become a neutral oxygen atom? A. It must lose two electrons. B. It must gain two electrons. O C. It must lose two protons. OD. It must gain two protons.​

What is the length x of the side of the triangle below? (hint: use the cosine function)

Astone is thrown into a pond. what happens to the amplitude of the resulting waves as they get farther from the point where the stone hit the water? explain.

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom