8
The structure of a chlorine atom is 2, 8, 7.
As an ion, it gains 1 electron to have a full outer shell, hence 2, 8, 8 and a -1 charge.
The first level can hold 2, the second can hold 8, and the third can hold 18 electrons. However, the outer level never holds more than 8; therefore an atom containing only 3 levels will have only 8 in the 3rd level.
Chlorine atom has 17 electrons. It is readily accepting an electron from another atom to obtain its stable electron configuration (of argon). A chloride ion has 18 electrons.
In magnesium, the third energy level can hold a maximum of 18 electrons. However, in a ground state magnesium atom, only 2 electrons are present in the third energy level, as magnesium has 12 electrons total - 2 in the first level and 8 in the second level.
The valence electrons of an atom are those electrons that are in its outer energy shell or that are available for bonding. The electrons more loosely held by the nucleus - are the ones that are gained, lost or shared.
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
Chloride is an ion, not an atom. It has 18 electrons which are 2, 8, 8 in the first three quantum levels respectively.
In the question, it should be either "chlorine atom" or "chloride ion". Chlorine atom has 7 valence electrons. Chloride ion has 8 valence electrons.
There are eight electrons in the third level of a chromium atom.There are four level in the chromium atom, and the fourth level, unfilled, contains 6 out of 18 electrons, in the neutral, non-ionized atom.
There are 8 electrons in the third energy level of a calcium atom.
The third energy level of an atom can hold eight electrons.
An argon atom has 2 electrons in its first energy level, 8 electrons in its second energy level, and 8 electrons in its third energy level.
The chloride ion (Cl-) has 8 electrons on the outermost energy level.
The third level of an atom can hold a maximum of 18 electrons.
This would be sulfur, and the third level has 6 electrons. See the diagram linked below
This atom would be lithium (Li). It has 3 electrons, with 2 electrons in the first energy level and 1 electron in the third energy level.
8
There are 2 electrons in the first energy level, 8 electrons in the second energy level, and 2 electrons in the third energy level of a magnesium atom, as it has an atomic number of 12 with electron configuration 2-8-2.