Oxygen is in group 6, and so it has 6 valence electrons. It needs to more to make an octet, so it will GAIN TWO electrons, and become negative 2, i.e. O^2-.
O₂ refers to a molecule of oxygen, which consists of two oxygen atoms. Each oxygen atom has 8 electrons, so in total, O₂ has 16 electrons. If you are asking about the number of electrons in an ion of oxygen, such as O²⁻ (which has gained two extra electrons), then it would have 10 electrons per atom, totaling 20 electrons for the O²⁻ ion.
An Oxygen atom would never contain 10 electrons on its own. It would have a maximum of 8 electrons at one time, unless the "oxygen atom" you are referring to is in fact an oxygen ION, in which case the charge would be -2. However, an oxygen ion can never be "by itself". It must be bonded with either itself as a diatomic or with another element as a compound.
A covalent bond would be formed between an oxygen and hydrogen atom. This bond is formed by the sharing of electrons between the atoms.
The isotopes of a given element, such as oxygen-16 and oxygen-18 have the same number of protons in their nuclei, but different numbers of neutrons, and therefore different mass numbers. Oxygen-16 has 8 protons (its atomic number) and 8 neutrons, while oxygen-18 has 8 protons and 10 neutrons. As long as they are neutral atoms, they also both have 8 electrons. An ion is an atom of an element, that has lost or gained one or more electrons, developing a positive or negative charge. When an oxygen atom ionizes, it gains two electrons, forming an oxide ion with a charge of 2-. The oxide ion would still have the same number of protons (8 for all oxygen atoms and ions), and it would have the same number of neutrons as the isotope that became the ion, so it would have the same mass number as the particular oxygen isotope that gained the two electrons, but the number of electrons would not equal the number of protons as it would in a neutral atom.
Carbon would share electrons with the oxygen to form carbon monoxide or carbon dioxide.
O₂ refers to a molecule of oxygen, which consists of two oxygen atoms. Each oxygen atom has 8 electrons, so in total, O₂ has 16 electrons. If you are asking about the number of electrons in an ion of oxygen, such as O²⁻ (which has gained two extra electrons), then it would have 10 electrons per atom, totaling 20 electrons for the O²⁻ ion.
An Oxygen atom would never contain 10 electrons on its own. It would have a maximum of 8 electrons at one time, unless the "oxygen atom" you are referring to is in fact an oxygen ION, in which case the charge would be -2. However, an oxygen ion can never be "by itself". It must be bonded with either itself as a diatomic or with another element as a compound.
A covalent bond would be formed between an oxygen and hydrogen atom. This bond is formed by the sharing of electrons between the atoms.
Oxygen wants to gain 2 electrons, so its charge would be 2-, because electrons have a negative charge.
Oxygen is the eighth element in the periodic table.8 protons and 8 electrons. The no of protons will always be the same as the no of electrons unless in witch case it would be referred to as being ionised or a free radical.
The oxygen 2- ion. The oxygen 2- ion gains two electrons and acts like neon.
Oxygen needs 8 electrons to have no charge.
The isotopes of a given element, such as oxygen-16 and oxygen-18 have the same number of protons in their nuclei, but different numbers of neutrons, and therefore different mass numbers. Oxygen-16 has 8 protons (its atomic number) and 8 neutrons, while oxygen-18 has 8 protons and 10 neutrons. As long as they are neutral atoms, they also both have 8 electrons. An ion is an atom of an element, that has lost or gained one or more electrons, developing a positive or negative charge. When an oxygen atom ionizes, it gains two electrons, forming an oxide ion with a charge of 2-. The oxide ion would still have the same number of protons (8 for all oxygen atoms and ions), and it would have the same number of neutrons as the isotope that became the ion, so it would have the same mass number as the particular oxygen isotope that gained the two electrons, but the number of electrons would not equal the number of protons as it would in a neutral atom.
Carbon would share electrons with the oxygen to form carbon monoxide or carbon dioxide.
Each electron has a 1- charge, so an atom that has gained 5 electrons has a charge of 5-.
A covalent bond is formed when two atoms share electrons, as in the case of hydrogen and oxygen in water. The shared electrons help stabilize the atoms by filling their outermost energy levels and allow them to form a more stable molecule.
An atom with 2 electrons would be helium, an atom with 8 electrons would be oxygen, and an atom with 6 electrons would be carbon.