Question

what is hydrogen?!?!?!???​

Answer 1

Answer:

• Hydrogen is the 1st element in periodic table
• Its atomic no. is 1
• Its atomic mass is 1u
• The symbol of Hydrogen is H.
• It is the lightest element
• Hydrogen is a gas.
• although Hydrogen is a non metal it shows property of metals too

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Answer 2

Answer:

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..