Answer:
The electron configuration for Be2+ is 1s^2.
Step-by-step explanation:
Usually, the electron configuration is 1s^2 and 2s^2 due to its placement on the periodic table.
However, with the +2 charge, what this really means is to take away two electrons, because beryllium wants to make a full octet even if it means losing its electrons to do so.
Therefore, the electron configuration after removing the 2 electrons becomes 1s^2.