how do the electron configurations of groups one and two in the periodic table differ from the configurations?

Question

how do the electron configurations of groups one and two in the periodic chart differ from the configs of the transition metals?

Answer 1

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The left-most columns of the periodic table (groups I and II) include the alkali metals and the alkaline earth metals. In these elements the valence 's' orbitals are being filled. In this case it takes two electrons to fill the 's' orbitals.

In the middle of the periodic table is a block of ten columns that contain the transition metals. These are elements in which 'd' orbitals are being filled. In this case it takes 10 electrons to fill each 'd' orbital.

Source(s): http://wine1.sb.fsu.edu/chm1045/notes/Struct/EPeri...

Answer 2

Valence Shells, the number that can orbit in each shell