1) Structure of Hydrogen (1), Oxygen (8), lithium

1.	1) Structure of Hydrogen (1), Oxygen (8), lithium
Answer» Answer: 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.

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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.

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1) Structure of Hydrogen (1), Oxygen (8), lithium ​

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1) Structure of Hydrogen (1), Oxygen (8), lithium