2 (= two)
Magnesium has two electrons in its outermost shell.
There are 12 electrons in the electron shell of magnesium, the same number as protons. As for the outermost shell, it would be 3s2, meaning there are two electrons in the third "s" shell.
There are no difference in the number of shells in magnesium and sulphur. Both elements contain 3 shells. However, the total number of electrons in the shells are different. Magnesium has 12 electrons in its shells whereas sulphur has 16 electrons in its shell. In addition, the electrons in the valence shell (outermost shell) are also different. Magnesium has 2 electrons in its valence shell whereas sulphur has 6 electrons in its valence shell.
Magnesium has a total of 12 electrons. The electron configuration would be 1s2 2s2 2p6 3s2. Therefore, 2 electrons in it's outer shell.
thallium has 3 electrons in outermost shell.
There are 2 electrons on the outermost shell of calcium.
Sulphur has 6 electrons in its outermost shell.
Valence electrons are the electrons in the outermost shell of an atom. The ones in the inner shell are known as core electrons.
Electrons in the outermost shell are called valence electrons.
Valence electrons are the electrons in the outermost shell of an atom. The ones in the inner shell are known as core electrons.
Electrons in the outermost energy shell (valence shell) have the most energy.
The name most often given to the outermost shell of electrons in the context of atomic structure is the valence shell.