Oxygen is a chemical element with the atomic number 8, which means that it has 8 protons in the nucleus of its atoms.
In addition to protons, atoms also contain electrons, which are negatively charged particles that orbit the nucleus. The number of electrons in an atom is typically equal to the number of protons, which means that oxygen atoms typically have 8 electrons.
However, it is important to note that the number of electrons in an atom can vary depending on the chemical state of the atom. For example, atoms can gain or lose electrons through chemical reactions, and the resulting ions will have a different number of electrons than the original atoms.
In its most common form, oxygen exists as a diatomic molecule, which means that two oxygen atoms are bonded together to form a molecule of oxygen gas (O2). In this molecule, each oxygen atom has 8 electrons, which means that the molecule as a whole has 16 electrons.
The number of electrons in an oxygen atom or molecule can be determined using a variety of methods. One common method is to use the periodic table, which is a table that arranges all of the known chemical elements according to their atomic number. The periodic table shows that oxygen has an atomic number of 8, which means that it has 8 protons and 8 electrons.
Another method for determining the number of electrons in an oxygen atom or molecule is to use electron configurations. Electron configurations are diagrams that show the arrangement of electrons in an atom or molecule.
For example, the electron configuration of oxygen is 1s2 2s2 2p4, which indicates that the atom has 2 electrons in the 1s orbital, 2 electrons in the 2s orbital, and 4 electrons in the 2p orbital.
Overall, oxygen atoms typically have 8 electrons, and oxygen molecules have 16 electrons. The number of electrons in an oxygen atom or molecule can be determined using the periodic table or by examining the electron configuration of the atom or molecule.