Question

Elements donate 2 electron to produce a cation with a 2+ charge

Answer 1

Answer: alkaline earth metals (group-IIA)

Step-by-step explanation:

The element which donates the electron is known as electropositive element and forms a positively charged ion called as cation. The element which accepts the electrons is known as electronegative element and forms a negatively charged ion called as anion.

Alkaline earth metals donate 2 valence electrons to acquire noble gas configuration.

For example: Berrylium is the first alkaline earth metal with atomic number of 4 and thus has 4 electrons

Electronic configuration of berrylium:

`[Be]:4:1s^22s^2`

Berrylium atom will loose two electrons to gain noble gas configuration and form berrylium cation with +2 charge.

`[Be^(2+)]:2:1s^2`

Thus Elements donate 2 electron to produce a cation with a 2+ charge are alkaline earth metals.