three, as follows:
4V V-Valence Electrons Valence Electrons-Last electron (which is on the outer shell)
Silicon has 4 electrons in its outer shell.
The outer shell (N=4) of the copper element has 2 electrons.
Boron has 5 electrons per atom. Boron's electron configuration is 1s2 2s2 2p1. Thus, it has 3 electrons in its outer shell.
Nitrogen needs 3 more electrons to fill its outer shell. It has 5 electrons in its outer shell, and it typically needs a total of 8 electrons to achieve a full outer shell (octet rule).
There is 2 in the first shell, 8 in the second, 18 in the third, and 3 in the last. 31 in total.
Nitrogen has five electrons in its outer shell and bromine has seven in its outer shell.
Boron has three electrons in its outer shell
Vanadium has on the outer shell two electrons.
3 valence electrons
Calcium has two electrons in the outer shell.
There is one electron on cobalts outer shell.
4V V-Valence Electrons Valence Electrons-Last electron (which is on the outer shell)
Boron has 3 electrons in the outer shell and 2 electrons in the inner.
seven it has to be
Tungsten has 6 electrons in its outer shell.
Chlorine has 7 electrons in its outer shell.