The question is more than a little vague.
The ground state electronic structure for boron is 1s2 2s2 2p1. In the absence of a magnetic field, this represents three distinct energy levels.
The ground state electronic structure for carbon is 1s2 2s2 2p2, which also represents three distinct energy levels in the absense of a magnetic field.
If a magnetic field is introduced, it complicates things, because depending on the exact strength of the field it's possible that boron could have electrons in as many as 5 distinct energy levels (and carbon could potentially have six), one for each of the electrons.
An atom's energy levels are occupied by electrons. Electrons occupy the energy levels, or electron shells, in order of increasing energy. The lowest energy level is filled first before electrons move to higher energy levels.
The highest occupies energy level in aluminum is the 3rd energy level. Its electron configuration is 1s22s22p63s23p1.
An electron in the outermost energy level of an atom is called a valence electron.(We refer here to the outermost occupied levels of an atom. There are, of course, many other higher energy levels normally available that are not occupied.)These electrons determine the chemical reactivity of the atom.the valence electrons
Lithium and sodium are alkaline metals that have 3 occupied energy levels.
The highest occupied energy level in potassium is the fourth energy level because potassium has 19 electrons, occupying the first three energy levels (with 2, 8, and 8 electrons, respectively) and the remaining electron is in the fourth energy level.
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An atom's energy levels are occupied by electrons. Electrons occupy the energy levels, or electron shells, in order of increasing energy. The lowest energy level is filled first before electrons move to higher energy levels.
The highest occupies energy level in aluminum is the 3rd energy level. Its electron configuration is 1s22s22p63s23p1.
An electron in the outermost energy level of an atom is called a valence electron.(We refer here to the outermost occupied levels of an atom. There are, of course, many other higher energy levels normally available that are not occupied.)These electrons determine the chemical reactivity of the atom.the valence electrons
In an aluminum atom, there are three electron energy levels that are occupied: 1s, 2s, and 2p. The 1s level can hold up to 2 electrons, and the 2s and 2p levels can each hold up to 6 electrons, for a total of 14 electrons in the aluminum atom.
The element carbon
The region around the nucleus of an atom occupied by electrons is called the electron cloud or electron shell. This is where electrons are most likely to be found based on their energy levels or orbitals.
Lithium and sodium are alkaline metals that have 3 occupied energy levels.
The energy of an electron in the second shell of a carbon atom is higher than in the first shell because electrons in shells that are further from the nucleus have higher energy levels. This is due to the increased distance from the positively charged nucleus in the atom, which decreases the electrostatic attraction between the nucleus and the electron.
The highest occupied energy level in potassium is the fourth energy level because potassium has 19 electrons, occupying the first three energy levels (with 2, 8, and 8 electrons, respectively) and the remaining electron is in the fourth energy level.
Only two electron shells.
Electrons are located in energy levels within the electron cloud.