Question

Hydrogen atoms in hydrocarbon formed by hydrogenation of ethylene

Answer 1

C2H4+H2=C2H6

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Answer 2

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.