Question

How are elements that are heavier than hydrogen spread throughout the universe?

A. When a star collapses as a black hole
B. When a star collapses into a neutron star
C. When a star forms into a red giant
D. When a star explodes as a supernova

Answer 1

maybe the answer is C when a star forms into a red giant

Answer 2

Answer:

Explanation:

When a star explodes as supernova, it is believed that the elements heavier than hydrogen disperse in the universe. These heavy elements include iron, lead, mercury, copper, gold, and iodine, which are often seen in our normal life.

If a star becomes overweight with these heavy elements, it turns into a supernova and may blast off, releasing out the heavier elements. Moreover, nuclear fusions during supernova explosion might have created some heavy atoms.