Final answer:
The element with the atomic number 1 is Hydrogen, which has one proton and is the first element on the periodic table. It is essential for life and the most abundant element in the universe. Hydrogen is represented by the symbol H.
Explanation:
Element with Atomic Number 1
The element that has the atomic number 1 is Hydrogen. In the periodic table, each element is assigned an atomic number that corresponds to the number of protons found in the nucleus of an atom of that element. Therefore, Hydrogen, with its single proton, is positioned at the top of the periodic table as the lightest and simplest element.
- Hydrogen has the symbol H.
- It is the most abundant element in the universe, making up about 75% of its elemental mass.
- In its gaseous form, Hydrogen exists as diatomic molecules (H2).
- It is essential for life, playing a significant role in water and organic compounds.
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