In order to determine the number of electrons in the outer orbit/ valence electrons of a metal, first the total number of electrons needs to be determined. This is done by deriving the atomic number from a Periodic Table. Arrange these in the shell format of 2, 8, 18, 32... The number of electrons in the outermost shell are the valence electrons
Aluminum has 3 electrons in its outermost energy level.
Carbon has four electrons in the outermost energy level, which is energy level two. It needs eight electrons to have this energy level filled.
Oxygen has 6 electrons in its outermost energy level. This means it has a valence of 6.
A neutral sulfur atom has 6 electrons in its outermost energy level. Sulfur has 16 electrons, with 2 electrons in the first energy level, 8 electrons in the second energy level, and 6 electrons in the third and outermost energy level.
Fluorine has 7 electrons in its outermost energy level. Its electron configuration is 2-7, with 7 electrons in the outermost energy level, making it highly reactive.
Aluminum has 3 electrons in its outermost energy level.
Carbon has four electrons in the outermost energy level, which is energy level two. It needs eight electrons to have this energy level filled.
5 electrons
Bromine has 7 electrons in its outermost energy level.
Oxygen has 6 electrons in its outermost energy level. This means it has a valence of 6.
A neutral sulfur atom has 6 electrons in its outermost energy level. Sulfur has 16 electrons, with 2 electrons in the first energy level, 8 electrons in the second energy level, and 6 electrons in the third and outermost energy level.
Fluorine has 7 electrons in its outermost energy level. Its electron configuration is 2-7, with 7 electrons in the outermost energy level, making it highly reactive.
8
Carbon has four electrons in the outermost energy level, which is energy level two. It needs eight electrons to have this energy level filled.
8 electrons
A neutral atom of magnesium has 2 electrons in its outermost energy level. Magnesium has a total of 12 electrons, with 2 electrons in the first energy level and 8 electrons in the second energy level. The outermost energy level is the second energy level in the case of magnesium.
Helium only needs two electrons to have a filled outermost energy level.