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An oxygen anion with a charge of -2 has 10 electrons. Oxygen normally has 8 electrons, but an anion with a -2 charge gains two additional electrons.
Oxygen itself is not an anion, as it is a neutral atom when not ionized. However, when oxygen gains two electrons, it forms the oxide ion O2-, which is an anion.
The anion of OCl (hypochlorite ion) has 8 valence electrons. This is because oxygen contributes 6 valence electrons and chlorine contributes 7 valence electrons. The overall negative charge of the anion adds one more electron, totaling 8 valence electrons.
Oxygen gains 2 electrons to become an oxide ion (O2-).
To convert a neutral oxygen atom to an anion carrying a charge of 2-, you need to gain two electrons. Oxygen has six electrons in its neutral state, so gaining two more electrons would give it a total of eight electrons, achieving a full outer electron shell and forming the oxide ion (O^2-).
An oxygen anion with a charge of -2 has 10 electrons. Oxygen normally has 8 electrons, but an anion with a -2 charge gains two additional electrons.
Oxygen itself is not an anion, as it is a neutral atom when not ionized. However, when oxygen gains two electrons, it forms the oxide ion O2-, which is an anion.
Chloride anion has 8 valence electrons.
The anion of OCl (hypochlorite ion) has 8 valence electrons. This is because oxygen contributes 6 valence electrons and chlorine contributes 7 valence electrons. The overall negative charge of the anion adds one more electron, totaling 8 valence electrons.
Oxygen is an oxidizer, it will gain electrons in a reaction to complete it's valence shell.
Oxygen gains two electrons (is reduced, "Reduction is gain") to form the O2- anion this gives oxygen an outer shell the same as neon, and completes the "octet" in its outermost shell of electrons.
Oxygen gains 2 electrons to become an oxide ion (O2-).
The number of electrons is 18.
A -2 anion indicates that the ion has gained two extra electrons. Since there are 8 protons in the nucleus (8 electrons in a neutral atom), adding two extra electrons would give a total of 10 electrons in the anion.
To convert a neutral oxygen atom to an anion carrying a charge of 2-, you need to gain two electrons. Oxygen has six electrons in its neutral state, so gaining two more electrons would give it a total of eight electrons, achieving a full outer electron shell and forming the oxide ion (O^2-).
A bromine anion has 8 valence electrons. This is because bromine, with 7 valence electrons, gains one extra electron when it forms an anion to achieve a full octet and become stable.
Oxygen gains 2 electrons when forming an ion. This is because oxygen typically forms an anion by gaining 2 electrons to achieve a stable, full outer electron shell similar to the nearest noble gas configuration.