Question

what is hydrogen????????????

Answer 1

• Hydrogen is the chemical element with the symbol H and atomic number 1.

• With a standard atomic weight of 1.008, hydrogen is the lightest element in the periodic table.

• Hydrogen is the most abundant chemical substance in the universe, constituting roughly 75% of all baryonic mass.

Answer 2

$\huge{\tt{\red{}\green{A}\purple{N}\pink{S}\blue{W}\orange{E}\red{R}}}☘$

• Hydrogen is the chemical element with the symbol H and atomic number 1.
• With a standard atomic weight of 1.008, hydrogen is the lightest element in the periodic table.
• Hydrogen is the most abundant chemical substance in the universe, constituting roughly 75% of all baryonic mass.[note 1]
• Non-remnant stars are mainly composed of hydrogen in the plasma state.
• The most common isotope of hydrogen, termed protium (name rarely used, symbol 1H), has one proton and no neutrons.