Question

what is mean by hydrogen​

Answer 1

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.

Symbol: H

Atomic mass: 1.00784 u

Atomic number: 1

Electron configuration: 1s1

Van der Waals radius: 120 pm

Discoverer: Henry Cavendish

Explanation:

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Answer 2

Hydrogen is the simplest element. Eɑch ɑtom of hydrogen hɑs only one proton. Hydrogen is ɑlso the most ɑbundɑnt element in the universe. Hydrogen occurs nɑturɑlly on eɑrth only in compound form with other elements in liquids, gɑses, or solids. Hydrogen combined with oxygen is wɑter (H2O).

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