What is the approximate ratio of hydrogen and helium in the sun’s core based on its current age?

73% hydrogen, 25% helium, and 2% other elements.

Explanation:

The Sun is composed of a mixture of 73% hydrogen, 25% helium, and 2% other elements by weight.

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

c (diamond),

sio2 (quartz)