Since the mass of of the helium nucleus is approx. 4.00 amu
Answer:
ionization energy is the amount of energy it takes to remove an atoms most loosely bound electron. going from the top of a group to the bottom, ionization energy decreases, as it is getting easier and easier to remove the outermost electron. As you move down a group, you add principle energy levels, which causes shielding. this means that there is decreased communication between the outermost electron and the nucleus, making it easier to remove the outer electron.
Answer: Stressors
Explanation:
it can deplete aquifers include changes in precipitation and snowmelt patterns
Protium - the most common isotope of hydrogen - has no neutrons in its nucleus.
