Question

How many electrons does barium have to give up to achieve a noble-gas electron configuration?

Answer 1

Step-by-step explanation:

Alkaline earth metals are the metals which are present in group 2 of the periodic table.

Elements of this group are beryllium, magnesium, calcium, strontium, barium and radium.

So, barium is an alkaline earth metal and its electronic configuration is
`[Xe]6s^(2)`.

It contains two valence electrons. Therefore, in order to attain noble gas configuration it needs to lose 2 electrons.

Hence, on losing two electrons it forms
`Ba^(2+)` ion.

Thus, we can conclude that barium have to give up 2 electrons to achieve a noble-gas electron configuration.