Generally, the lowest open one.
Valence electrons are found in the outermost energy level of an atom, also known as the highest principal energy level. These are the electrons involved in chemical bonding and determining the reactivity of an element.
The valence electrons are the outer most electrons and the principal energy level in which they belong will vary for element to element and generally corresponds to the period number in which the element is present
An energy level
The electrons found in the outermost shell (or energy level) are known as the valence electrons.
Yes, electrons within the same energy level in an atom have the same energy. Energy levels correspond to specific orbitals where electrons can be found and each level can hold a certain maximum number of electrons.
The first energy level can contain 2 electrons. The second energy level can contain 8 electrons. The third energy level can contain 18 electrons.
2!
At energy level n=1, the total number of electrons that could be found is 2, as the first energy level can hold a maximum of 2 electrons.
In oxygen, the third energy level can hold a maximum of 18 electrons. However, oxygen only has 8 electrons in total, so only 2 electrons are found in the third energy level.
The principal energy level is represented by the main energy level number (n). The valence electrons are the electrons found in the outermost energy level of an atom, which corresponds to the highest principal energy level (n).
electrons
Electrons found in the outermost energy level of an atom are called valence electrons. These electrons are involved in forming chemical bonds with other atoms, which determines the atom's reactivity and behavior in chemical reactions. The number of valence electrons an atom has contributes to its position in the periodic table and helps predict its chemical properties.