How can I calculate the valence electrons of transition metals?

1 Answer
Apr 29, 2015

You can calculate the number of valence electrons of transition metals by counting the number of electrons outside the ultimate noble gas core.

e.g (1) Chromium: $\left[A r\right] 3 {d}^{5} 4 {s}^{1}$

This means there are 6 valence electrons available for bonding.

e.g (2) Zirconium: $\left[K r\right] 4 {d}^{2} 5 {s}^{2}$

This means there are 4 valence electrons available for bonding.