Which group of elements typically forms ions with a 2+ charge?

1 Answer
Jan 31, 2017

Answer:

#"The Group 2 metals..........."#

Explanation:

#"The Group 2 metals; the alkaline earths"#.

Look at the Periodic Table, and look at the second COLUMN; you see #Be, Mg, Ca, Sr, Ba#. Because the Periodic Table reflects electronic structure, all of these metals have the TWO VALENCE ELECTRONS, which can be lost on oxidation. (Metals are electron-rich species that tend to be oxidized).

And we can represent the oxidation:

#Mg rarr Mg^(2+) + 2e^-#

On the other hand, the transition metals of the #"d-block"# commonly form bivalent metal cations:

#MrarrM^(2+) + 2e^-#

These electrons are also conceived to derive from #"s-orbitals."#