Monday: Science
What is the periodic table’s first element?
Hint: This element has an atomic number of 1.… →
The first element on the periodic table is hydrogen.
The first element on the periodic table is hydrogen, which is represented by the symbol "H" and has an atomic number of 1.
Hydrogen is the lightest and most abundant element in the universe, making up about 75% of its elemental mass. It consists of one proton and one electron, with no neutrons in its most common form.
As a highly reactive gas, hydrogen plays a crucial role in many chemical reactions, including the process of fusion in stars, where it is converted into helium and releases vast amounts of energy. Its simple structure makes it a fundamental building block in chemistry and astrophysics.