The second one if it’s on edge
Answer: you subtract the number of protons from the mass number, on the periodic table your atomic number is your protons and your atomic mass is the mass number
Explanation:
The Kelvin scale has no negatives on it.
Zero Kelvin is 'Absolute Zero', and nothing can get colder than that.
Answer:
A
Explanation:
Begin as protostars, which fire up when they collapse and become denser and hotter.
