Yes it gains two electrons, because it already has 6 valence electrons..it gains two to make it an even 8 (because of the Octet Rule). Since it gains two electrons it makes it O^-2
Gain of electrons form anions (negative charged atoms).
Atoms gain electrons to form negatively charged anions. Atoms lose electrons to form positively charged cations.
Oxygen is an oxidizer, it will gain electrons in a reaction to complete it's valence shell.
Elements that are more electronegative tend to gain electrons to form anions. Typically, nonmetals, such as chlorine, oxygen, and sulfur, will gain electrons to achieve a stable electron configuration, often resembling that of the nearest noble gas. For example, chlorine gains one electron to form a chloride ion (Cl⁻).
The elements in group-15 , 16 and 17 have 5,6 ad 7 valence electrons respectively , so they gain electrons to form anions.
Generally non-metals gain electrons and form anions.
Gain of electrons form anions (negative charged atoms).
Atoms gain electrons to form negatively charged anions. Atoms lose electrons to form positively charged cations.
Oxygen is an oxidizer, it will gain electrons in a reaction to complete it's valence shell.
Elements that are more electronegative tend to gain electrons to form anions. Typically, nonmetals, such as chlorine, oxygen, and sulfur, will gain electrons to achieve a stable electron configuration, often resembling that of the nearest noble gas. For example, chlorine gains one electron to form a chloride ion (Cl⁻).
Non metals generally form anions. They gain electrons during ionic bonding.
Aluminum sulfite is an ionic compound. Aluminum is a metal that tends to lose electrons to form cations, while sulfite is a polyatomic ion composed of sulfur and oxygen that tends to gain electrons to form anions. When aluminum cations combine with sulfite anions, they form an ionic bond.
Non metals generally form anions. They gain electrons during ionic bonding.
The elements in group-15 , 16 and 17 have 5,6 ad 7 valence electrons respectively , so they gain electrons to form anions.
Anions are negative ions, so any element that gains a negative charge in a chemical reaction. Some examples of elements that commonly do this are the halogens (flourine, chlorine, bromine, iodine, astatine) and oxygen.
Non-metals gain electrons. Hence, they can easily form anions.
It is done by Non-metals and metalloids.They form anions