Newton's First Law of Motion: Any object remains in the state of rest or in uniform motion along a straight line, until it is compelled to change the state by applying external force.
Newton's Second Law of Motion: The rate of change of momentum is directly proportional to the force applied in the direction of force.
Newton's Third Law of Motion: There is an equal and opposite reaction for evrey action
Newton's First Law of Motion: Any article stays in the condition of rest or in uniform movement along a straight line, until it is constrained to change the state by applying outside power.
Newton's Second Law of Motion: The pace of progress of energy is legitimately relative to the power applied toward power.
Newton's Third Law of Motion: There is an equivalent and inverse response for evrey activity
The atomic mass is determined by the number of protons and neutrons in a atoms for example oxygen has eight protons and neutrons which gives oxygen and atomic mass of 16
Remark The short Answer is 6. That's why the ion has a charge of minus 2. Oxygen is doing it's best to have its outer ring have 8 electrons which is the number of outer electrons contained in the outer ring of the Noble Gas Neon.