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

Answer 1

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

#"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 here's how we can depict 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."#

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Answer 2

Cooper Adams

The alkaline earth metals (group 2 of the periodic table) consist of beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). Typically, these elements form ions with a 2+ charge.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.