Hydrogen Peroxide—formed by two atoms of Hydrogen and Oxygen each
These two elements are bonded together by covalent bonding.
Hydrogen is a constituent element of hydrogen peroxide with the symbol H. It is the most common element in the universe, found in almost every star. It is highly flammable and ignites instantly when in contact with heat. It is colourless, odourless, nonmetallic and tasteless at room temperature.
Oxygen is a constituent element of hydrogen peroxide with the symbol O. By mass, it is the third most abundant element in the universe after hydrogen and helium. It is required by all living things for respiration. At room temperature, it is a colourless odourless and tasteless gas.
Formation
As oxygen has 8 electrons and 6 valence electrons, 2 more valence electrons are needed to obtain a full valence shell. A hydrogen atom has 1 valence electron. Since Hydrogen Peroxide has two hydrogen atoms, they share a single bond of electrons. Since they lack one electron, the hydrogen atom will share its valence electron to form a full valence shell.
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