Phosphorous
This element is xenon.
Calcium
Argon has 18 electrons.
Krypton (Kr) has a total number of 36 electrons, which is the same as the number of core electrons in barium (Ba).
The atomic number for the element gold is 79. This means there are 79 electrons in an atom of this element.
To find the total number of electrons in an element, first you need to look up the element's atomic number. That number tells you how many protons are in the element. Then, look up the net charge of the element. The number of protons subtracted by the elements net charge will give you the number of its electrons.
The velence electron will vary for element to element and can have 1 to 8 valence electrons.
Two electrons from each element are shared; the total is four electrons.
The element in the fourth period with 3 3d electrons is titanium (element #22).
Boron has 3 valence electrons out of five total electrons.
Germanium has a total of 32 electrons in different orbitals.
It is Oxygen. Because Oxygen has the atomic no. - 8. Which means that 2 electrons can accommodate in the inner shell and the rest of the electrons (6 electrons) are in the out shell.