Hydrogen's atomic number, 1, shows that hydrogen should appear in the highest row of the Periodic Table in the leftmost box of that row.
Hydrogen is a gas. atomic number of H is 1.
Hydrogen is a chemical element with the atomic number 1.
Hydrogen is a non metal element. Atomic number of it is 1.
Hydrogen is a non metal element. Atomic number of it is 1.
The symbol for the chemical element sodium is Na and its atomic number is 11.
Hydrogen's atomic number is 1.
It's a non metal, it's atomic number is 1, and it's atomic mass is about 1.
The atomic number for hydrogen is 1 and the atomic number for carbon is 6.
The atomic number of hydrogen is 1.
The atomic number of hydrogen is 1
Hydrogen is a colorless, odorless, highly flammable gas, the chemical element of atomic number 1. (Symbol: H)
Hydrogen is a non metal element. Atomic number of it is 1.