Question

write about the hydrogen​

Answer 1

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

It has a standard atomic weight of 1.008, meaning it is the lightest element in the periodic table. Hydrogen is the most common chemical element in the Universe, with 75% of all baryonic mass being hydrogen.

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Answer 2

$\huge\mathtt\red{\underline{Hydrogen}}$

★Hydrogen is the first element in the periodic table.

★ Symbol of Hydrogen is H and its atomic number is 1.

★ Mass number of Hydrogen is 1 and it is the lightest element.

★ Hydrogen is the most abundant element in the universe which is about 75% in the universe.

★Hydrogen is mostly present in the form of gas and it is found in stars, planets and many astronomical objects.

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