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Lead is a metal that forms a positively charged cation. It must lose electrons.
Covalent bonds do not gain or lose electrons, but rather share electrons.
Arsenic can lose and gain electrons.
Corrected: All atoms have a neutral charge until they lose or gain electrons. Once they lose/gain electrons then they are considered ions with respectively positive (on loosing) or negative charge (on gaining electrons, as oxygen tends to do).NO: 2-. It's the same as minus 2, but is written as 2- for conventions.
Sulfur can gain maximum of 2 electrons and lose maximum of 6 electrons.
when it forms an ion it would gain two electrons, becoming negatively charged (2-)
Magnesium has a charge of 2+ and oxygen 2- Magnesium will lose the two "extra electrons" in its valence shell when creating an ionic bond with oxygen. The oxygen will gain these two electrons.
An ionic bond.
it will lose 3 electrons
Oxygen is an oxidizer, it will gain electrons in a reaction to complete it's valence shell.
Lead is a metal that forms a positively charged cation. It must lose electrons.
Oxygen will gain two electrons to achieve a full outer shell.
Oxygen has six valence electrons, which means that it needs to gain two to become stable. it takes much more energy for oxygen to lose its 6 valence electrons than it would be to gain 2. When atoms form compounds, they become stable.
It can both gain and lose electrons depending on the different elements. With hydrogen, it gains electrons to produce hydrogen sulphide and it will lose electrons with oxygen to produce sulphur oxides. Generally it will tend to gain electrons as it is in group 16 of the elements and so is quite negatively electrovalent but against a more negatively electrovalent elements it can be forced to lose electrons unwillingly as in the case of oxygen. Even though oxygen is also in group 16, sulphur is an order below oxygen and therefore less negatively electrovalent that oxygen.
ions
Oxygen has six valence electrons, which means that it needs to gain two to become stable. it takes much more energy for oxygen to lose its 6 valence electrons than it would be to gain 2. When atoms form compounds, they become stable.
Iodine tends to gain one electron when it forms an ion.