Massive stars fuse hydrogen, then helium, and finally develop carbon-oxygen cores. At about 1 billion K, they are able to ignite carbon, then oxygen, neon and magnesium fuse to make silicon, and finally iron. Because more and more protons are used up to make
heavier atoms, we could expect
A)
less energy to be emitted from the star.
B)
more energy to be emitted due to fusion
the production of more radioactive isotopes
D
more electromagnetic radiation to be emitted.
Atomic Theory and Periodic Law