Atoms are trying achieve a stable electronic configuration i.e., stable arrangement of electrons in their electron shells. All configurations are not stable. Mostly stable configuration is attained by forming an octet of electrons in outer most shell. Sometimes octet rule is violated also.
Magnesium has three electron shells. The electron configuration is 2,8,2
The outer electron shells of the halogens typically contain seven electrons, making them highly reactive and likely to gain one electron to achieve a stable electron configuration. Additionally, halogens have a tendency to form negatively charged ions when they react with other elements by gaining one electron.
Francium has seven electron shells; electrons per shell: 2, 8, 18, 32, 18, 8, 1.
A bismuth atom has 6 electron shells.
Phosphorus in is 3rd period. So it has 3 electron shells.
Elements in the same row, or period, of the periodic table fill up the same energy level as you move from left to right. This is because elements in the same period have the same number of electron shells.
Magnesium has three electron shells. The electron configuration is 2,8,2
Sodium, i believe has 3 shells.
The outer electron shells of the halogens typically contain seven electrons, making them highly reactive and likely to gain one electron to achieve a stable electron configuration. Additionally, halogens have a tendency to form negatively charged ions when they react with other elements by gaining one electron.
Bromine has 4 electron shells.
Samarium has six electron shells.
Polonium has 6 electron shells.
Chromium has two electrons in the outer most shell.
Nickel has 3 (three) electron shells.
A sulfur atom has 3 electron shells.
No, iodine has four electron shells, marked as "K", "L", "M", and "N". The number of electron shells is determined by the electron configuration of an element.
Uranium has 92 electrons, which means it has 7 electron shells.