Answer:
C.) Argon
Explanation:
This is because ionisation energy increases as we move from left to right in a period. Argon presents in the right most column and Argon is a novel gas and has 8 electrons in outermost orbital. So, it is highly stable. I hope I helped! ^-^
if your serious about this question then it is 5
protons, neutrons, and electrons.
d.
liters is a measure of volume, it is an SI accepted metric system unit
