19892 - | | | 19903 - Reply from Maria , 25 y.o. (Venezuela) - 2017-03-29
| Hello :) I hope I'm able to help you. The periodic table has different sections: metals, metalois and no-metals. The metals (the one we're interested in) are separated in three groups, one of those groups is called transition metals. Those metals are the ones that can extend their shell to accept up to 18 electrons. Why it happens? If you're interested I can tell you about it in another post. So, now, how can the metals extand their shell? Well, it is because the transition metals have "d" orbitals in which the extra electrons can be located. See this:
A metallic atom has s orbitals (2 electrons), p orbitals (6 electrons), d orbitals (10 electrons), in total, there are the 18 electrons ^_^ |
|