What is the main element that stars are made of? helium hydrogen magnesium sodium

They are mainly comprised of hydrogen, and through the process of fusion it makes helium.

It is mainly made up of Hydrogen and sub oriented by Helium.

Explanation:

An enormous chunk of gas held together by gravity. The focal center of a star is to a great degree hot and produces vitality. A portion of this vitality is discharged as obvious light, which makes the star sparkle. Stars frame inside generally thick groupings of interstellar gas and residue known as atomic mists. These districts are greatly chilly temperature around 10 to 20K, simply above total zero. At these temperatures, gases end up sub-atomic implying that particles tie together.