You shouldn't use terms like "outer level", because they're confusing. It could potentially mean at least two things, specified more precisely below.
The highest occupied energy level of a ground state neutral carbon atom, the 2p level, has two electrons.
The number of electrons in a ground state neutral carbon atom that have a principal quantum number of 2 (the highest associated with any electrons in such an atom) is four.
In its ground state, carbon does not have any electrons in the third energy level.
There are 4 valence electrons in a standard Carbon atom (one that has had no bonding, or other such things).
In the outer energy level of a carbon atom, there are 4 electrons.
4
It has four
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4
There are 2 energy levels in a Carbon atom. The first energy level consists of '1s' orbital, and the second energy level consists of the '2s' orbital and the '2p' orbital.
The period tells you how many energy levels an atom has.
The energy levels of an atom hold electrons.
Electrons
it very easy: whatever row the element is in is the number of energy levels it has. Example: hydrogen in the first row, it has 1 energy level.Read more: How_do_you_find_number_of_energy_levels_in_an_element
electrons
2
the period number tells which is the highest energy level occupied by the electrons
An atom's energy levels are orbitals which can contain 2 electrons each, assuming that they are traveling in opposite directions from each other.
the period number tells which is the highest energy level occupied by the electrons
Carbon has 2 energy levels. There are 6 electrons, 6 protons, and 6 neutrons.
4
There are 2 energy levels in a Carbon atom. The first energy level consists of '1s' orbital, and the second energy level consists of the '2s' orbital and the '2p' orbital.
that depends on the number of electrons the more electrons the more energy
Neon has the 1s2, 2s2, and 2p6 levels filled.
Electrons occupied certain discrete energy levels around the nucleus.
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