The atomic states with principal quantum number 4 can have orbital angular momentum quantum numbers from -4 to 4. Hence there are 9 possible values of the orbital angular momentum quantum number. Each electron can have spin +1/2 or -1/2, so each of the states specified by a given orbital angular momentum quantum number can have at most two electrons in the state without violating Pauli's exclusion principle.
So, in sum, there are 18 possible states for an electron with principal quantum number 4.
16 orbitals in the 4th energy level. One s orbital, three p orbitals, five d orbitals, seven f orbitals Elements where the 4th principal energy level are filled are:- period 4 4s and 4p (starting with potassium) period 5 4d starting with Yttrium Lanthanides 4f starting with cerium
1st energy has 1 sublevel -- 1 orbital -- 2 electrons 2nd energy level has 2 sublevels -- 4 orbitals -- 8 e- 3rd energy level has 3 sublevels -- 9 orbitals -- 18 e- 4th energy level has 4 sublevels -- 16 orbitals -- 32 e- Notice the pattern? number of orbitals = energy level squared Number of electrons = 2x number of orbitals
There are one 3s orbital, three 3p orbitals, and five 3d sublevels.
The third energy level of an atom can hold eight electrons.
8 electrons. The second energy level (n=2) has 4 orbitals. One s orbital and three p orbitals. Each orbital can hold 2 electrons of opposite spin.
16 orbitals in the 4th energy level. One s orbital, three p orbitals, five d orbitals, seven f orbitals Elements where the 4th principal energy level are filled are:- period 4 4s and 4p (starting with potassium) period 5 4d starting with Yttrium Lanthanides 4f starting with cerium
There is one s orbital and three p orbitals and five d orbitals in the third energy level.
14
5
5
In the second energy level, there are four orbitals - one 2s orbital and three 2p orbitals.
one
One only - 1s.
One only - 1s.
There are two sublevels in the second principle energy level. The s sublevel has one orbital and the p sublevel has 3, for a total of 4 orbitals.
There are four energy sublevels in the fourth energy levels: 4s, 4p, 4d, and 4f.
Briefly:The electrons are in orbitals, each orbital can take two electrons and each electron would have an opposite spin. Orbitals can have no electrons, one electron or be filled with two electrons.Orbitals are arranged in energy levels. However, even in the same energy level different orbitals will have different energy despite being in the same main energy level.The energy level nearest the nucleus has 1 orbital: 1sThe next energy level, the second energy level has four orbitals: 2s and three p orbitals. The 2p orbitals have more energy than the 2s orbital. The third energy level has 3s x1; 3p x 3 and 3d x 5 however, the 3d orbitals have an energy which actually places them in the fourth energy level between 4s and 4p. It gets complicated.