The electrons on the outtermost energy level of an atom is called a valence electron.
Energy levels
electron dot diagram
The outer energy level refers to the highest energy level of an atom that contains electrons. These electrons are involved in chemical reactions and bonding with other atoms. The number of electrons in the outer energy level determines an atom's reactivity and ability to form chemical bonds.
Potassium has 1 electron in its outer energy level. When it forms a bond, it typically donates this electron to another element, leaving it with a full outer energy level.
Cesium, or Cs, has 1 valence electron.
The atom's outermost electron shell determines its chemical properties and how it interacts with other atoms. It is involved in forming chemical bonds with other atoms to create molecules through sharing, gaining, or losing electrons. The number of electrons in the outermost shell also influences the atom's reactivity and stability.
Atoms with fewer than 8 valence electrons can fill their outermost energy level by forming chemical bonds with other atoms. For example, magnesium can lose 2 electrons to achieve a full outer energy level, becoming a +2 cation. Conversely, sulfur can gain 2 electrons to fill its outer energy level, becoming a -2 anion. Both processes result in stable, filled outer energy levels for the atoms involved.
nobel gases has few electron in the outer energy level
The Valence electron
The outer energy level for an atom is determined by the highest principal quantum number, n. In this case, the highest n value in the electron configuration is 4. Therefore, the outer energy level is the fourth energy level.
You mean valence electron? 2 If your talking about Bohr Diagrams then it depends on the metal
They don't. Of the main group, or representative elements, group 1 elements are the only ones whose atoms have only 1 electron in their outermost energy levels.