Electrons enter the orbitals on the basis of increasing energy of sub-shells. Also, when an electron occupies an orbital another electron cannot occupy that orbital until all other orbitals of that sub-shell have atleast 1 electron.
The Bohr configuration for chlorine is 2-8-7, representing the distribution of its electrons in shells. Chlorine has 17 electrons, so it has two electrons in the first shell, eight in the second shell, and seven in the third shell.
Boron has two orbital shells. The first shell contains 2 electrons, while the second shell can hold up to 8 electrons. Boron typically has 5 electrons, with 2 in the first shell and 3 in the second shell.
there are two shells of electrons in the nitrogen atom that actually have electrons in them, nitrogen has two electrons in the first shell, the S orbital, and five in the outer shell, the P orbital. this causes nitrogen to have a valence shell with five electrons.
Nitrogen has 5 valence electrons. Valence electrons are the electrons that are found in the outer most shell of an atom, and are consequently the electrons that move from atom to atom in the formation of compounds. The reason for this is a result of the electron configuration. A nitrogen atom has 3 orbitals; the 1s orbital, the 2s orbital, and the 2p orbital. In this case, the 2s and 2p orbitals are the valence orbitals, as they have the electrons with the most energy. With 7 protons, a neutral nitrogen atom has 7 electrons. The s orbitals can only hold 2 electrons, and the p orbitals can hold up to 6 electrons. The 1s orbital is filled first, leaving five electrons, then the 2s orbital is filled, leaving 3 electrons, and then these remaining electrons fill the 2p orbital halfway. There are a total of 5 electrons in the 2s and 2p orbitals, and since these orbitals have the most energy, there are 5 valence electrons.
Your question reveals a common confusion between orbitals and shells. Chlorine has three electron shells: the first, second and third. The first shell has just the one orbital, the 1s The second shell has two sub-shells, the 2s and the 2p. There are three p orbitals in the 2p sub-shell. Each orbital can hold two electrons, so there are eight electrons maximum in the second shell. The third shell likewise has two sub-shells, the 3s and the 3p, but the 3p is not completely filled, leaving room for one more electron. When chlorine gains this electron it will become a Cl- ion. This is summed up in the electron configuration 1s22s22p63s23p5.
The electrons in the outermost shell or orbital are called valence electrons. These electrons are involved in forming chemical bonds with other atoms.
Those elements were (till now) not found
3d^6 Six electrons in the outer shell.
Two electrons can fit into the first orbital shell of any atom.
There are two electrons in the first shell of neon. Its complete electronic configuration is 2,8
Be (beryllium) has four electrons total: the first orbital, the 1s orbital, has two, which leaves two electrons in the outer shell.
The orbital filling diagram for silicon shows two electrons in the 1s orbital, two electrons in the 2s orbital, and six electrons in the 2p orbital. This gives silicon a total of 14 electrons in its outer shell.
The valence shell is considered higher than the s-orbital. The valence shell is the outermost shell of an atom that contains electrons involved in chemical bonding, while the s-orbital is a specific subshell within a shell that can contain up to 2 electrons.
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In an atom, an orbital is a region where electrons are likely to be found, while a shell is a group of orbitals with similar energy levels. Orbitals are specific locations within a shell where electrons can exist.
There can be 10 electrons in the n=2 shell. Two can fit in the 1s orbital, two can fit in the 2s orbital, and six can fit in the 2p orbital.
The Bohr configuration for chlorine is 2-8-7, representing the distribution of its electrons in shells. Chlorine has 17 electrons, so it has two electrons in the first shell, eight in the second shell, and seven in the third shell.