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The third energy level contains one s orbital and three p orbitals.
Two elements
hydrogen and helium
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 principal quantum number, n, designates the main energy levels occupied by electrons. The number of orbitals in an energy level is n2 (n squared), so that the first energy level, n = 1, contains 1 orbital; the second energy level, n = 2, contains 4 orbitals; the third energy level, n= 3, has 9 orbitals; and the fourth energy level, n=4, has 16 orbitals, and so on.
The third energy level contains one s orbital and three p orbitals.
two elements, hydrogen and helium.
Sulfur has three electron orbitals. The first orbital contains 2 electrons, the second contains 8 and the third contains 6.
Two elements
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.
hydrogen and helium
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.
One only - 1s.
One only - 1s.
Aufbau principle
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