Which Elements Form Negative Ions - These ions are negative because they contain more electrons than protons. As mentioned above, there are positive and negative ions. An oxygen atom gains two electrons to form. Web properties of ionic compounds forming ions an ion is an atom or group of atoms with a positive or negative charge. In this ocr gcse chemistry study guide,.
As mentioned above, there are positive and negative ions. In this ocr gcse chemistry study guide,. An oxygen atom gains two electrons to form. These ions are negative because they contain more electrons than protons. Web properties of ionic compounds forming ions an ion is an atom or group of atoms with a positive or negative charge.