The answer is spin.
Each quantum number that describes the two electrons in a helium atom is identical, except for the one that indicates their spin.
Neutral potassium also contains 19 electrons and 21 neutrons.
You multiply 15,000 by .1, which equals 1,500. Then you add that to 15,000. This equals 16,500. That is your answer.
Answer:
A. Carbon dioxide travels from the heart to the lungs in pulmonary arteries
Explanation:
