Question

What is hydrogen?¿?¿?¿?​

Answer 1

Explanation:

Hydrogen is the chemical element with the symbol H and atomic number 1. Hydrogen is the lightest element. At standard conditions hydrogen is a gas of diatomic molecules having the formula H₂. It is colorless, odorless, non-toxic, and highly combustible. Wikipedia

Answer 2

$\bf\huge{ANSWER}$

$\bf\green{Hydrogen}$

• Hydrogen is the lightest element.

• Symbol: H

• Atomic mass: 1.00784 u

• Atomic number: 1

• Electron configuration: 1s¹

• Van der Waals radius: 120

• Discovered: 1766

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