Answer
An atom becomes a positive ion (cation) when it loses one or more electrons. This electron loss results in an excess of protons compared to electrons, giving the ion a net positive charge. The process of losing electrons can occur through various mechanisms such as chemical reactions or interactions with other atoms or molecules. When an atom loses electrons, its positive charge increases according to the number of electrons lost.
On the other hand, an atom becomes a negative ion (anion) when it gains one or more electrons. This electron gain leads to an excess of electrons compared to protons, resulting in a net negative charge. Similar to the formation of positive ions, the acquisition of electrons can happen through chemical reactions or interactions with other species. The negative charge of an ion increases with the number of electrons gained.
It's important to note that the tendency of an atom to gain or lose electrons depends on its position in the periodic table and its specific electron configuration. Some elements have a greater affinity for gaining electrons, while others have a greater tendency to lose electrons. The formation of positive or negative ions allows atoms to achieve a stable electron configuration and attain a more energetically favorable state.
Work Step by Step
An atom becomes a positive ion (cation) when it loses one or more electrons. This electron loss results in an excess of protons compared to electrons, giving the ion a net positive charge. The process of losing electrons can occur through various mechanisms such as chemical reactions or interactions with other atoms or molecules. When an atom loses electrons, its positive charge increases according to the number of electrons lost.
On the other hand, an atom becomes a negative ion (anion) when it gains one or more electrons. This electron gain leads to an excess of electrons compared to protons, resulting in a net negative charge. Similar to the formation of positive ions, the acquisition of electrons can happen through chemical reactions or interactions with other species. The negative charge of an ion increases with the number of electrons gained.
It's important to note that the tendency of an atom to gain or lose electrons depends on its position in the periodic table and its specific electron configuration. Some elements have a greater affinity for gaining electrons, while others have a greater tendency to lose electrons. The formation of positive or negative ions allows atoms to achieve a stable electron configuration and attain a more energetically favorable state.
