Nonmetals tend to attract electrons to become negative ions.
Elements on the right-hand side of the periodic table, that is to say, non-metals, will form negative ions. This is because, in order to become stable, they need to GAIN electrons, making them more negative than they were before. For example, Oxygen has 6 valence electrons, and needs 2 more to reach a stable octet. If it gains 2 electrons is will have a charge of -2, making it a negative ion.
Elements become electropositive or electronegative based on their tendency to lose or gain electrons. Electropositive elements have a low electronegativity and readily lose electrons to form positive ions. Electronegative elements have a high electronegativity and tend to gain electrons to form negative ions.
Some elements become ions by gaining or losing electrons to achieve a stable electron configuration. When an element gains electrons, it becomes a negative ion (anion), while losing electrons results in a positive ion (cation). This process allows the element to achieve a full outer electron shell and become more stable.
The chlorine atoms would become negatively charged because they would gain electrons from the calcium atoms, resulting in an excess of electrons and a net negative charge.
negatively
Nonmetals are elements that tend to gain electrons in chemical reactions. They typically form negative ions (anions) by accepting electrons from other elements. Nonmetals are generally located on the right side of the periodic table.
The positivity and negativity of an ion is determined by the number of electrons compared to that of protons. If there are more electrons than protons in the ion, it is considered negative. It becomes negative by gaining electrons, which can happen a number of ways. Simply put, most often it gains electrons by pulling them off of other elements and molecules. The more electronegative an element is, the easier it is for it to do this. Elements are most stable in their "octet" configuration where all of the available spots in an orbital are filled. Elements with less than a perfect octet will rip electrons off of other things.
The positivity and negativity of an ion is determined by the number of electrons compared to that of protons. If there are more electrons than protons in the ion, it is considered negative. It becomes negative by gaining electrons, which can happen a number of ways. Simply put, most often it gains electrons by pulling them off of other elements and molecules. The more electronegative an element is, the easier it is for it to do this. Elements are most stable in their "octet" configuration where all of the available spots in an orbital are filled. Elements with less than a perfect octet will rip electrons off of other things.
An atom will become Negative if it gains an electron and it will be an Anion.If it loses an electron it will be Positive and it will be a CationLearn & Enjoy
In general, oxidation numbers are positive when an atom loses electrons (oxidation) and negative when an atom gains electrons (reduction). The oxidation number reflects the charge that the atom would have if the electron was completely transferred.
The loss or gain of electrons
Since electrons are negative, they get a negative charge.