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The energy levels that do not have p orbitals are the first and second energy levels. The first energy level (n=1) contains only an s orbital, while the second energy level (n=2) has both s and p orbitals. Starting from the third energy level (n=3), s, p, and d orbitals are present.
Two elements
It is based on many factors, but the easiest to understand is ENERGY. The orbitals in which the electron has the lowest energy are filled FIRST.
Aufbau principle
The third energy level contains one s orbital and three p orbitals.
The column that contains elements whose electron configuration ends with d4 is the "transition metals" column. Transition metals have partially filled d orbitals in their electron configurations, typically with the d orbitals being filled first before the s and p orbitals.
Orbitals are regions of space around the nucleus where electrons are likely to be found. Energy levels represent the specific energies that electrons can have in an atom. Each energy level can contain one or more orbitals, with each orbital having a specific shape and orientation.
Sulfur has three electron orbitals. The first orbital contains 2 electrons, the second contains 8 and the third contains 6.
two elements, hydrogen and helium.
Electrons don't have levels. They have shells and orbitals. Each shell contains certain orbitals. For example, the first shell contains only the s orbital. The second contains the s and p orbital. The fourth shell has the s, p, and d orbitals.
Two elements
The s orbital is lower in energy than the porbital.
It is based on many factors, but the easiest to understand is ENERGY. The orbitals in which the electron has the lowest energy are filled FIRST.
Aufbau principle
One only - 1s.
One only - 1s.
The third energy level contains one s orbital and three p orbitals.