which image of the periodic table shows the correct shading of the region which has elements with two…

which image of the periodic table shows the correct shading of the region which has elements with two valence electrons in the outer energy levels?

which image of the periodic table shows the correct shading of the region which has elements with two valence electrons in the outer energy levels?

Answer

Brief Explanations:

The elements with two valence - electrons in the outer energy levels are the alkaline - earth metals (Group 2) and helium (Group 18, first element). Helium has a full outer shell with 2 electrons. Group 2 elements have 2 electrons in their outermost s - orbital. The correct shading should include Group 2 and helium.

Answer:

(Without seeing the actual images, it's not possible to specify which one is correct. But the correct image should shade Group 2 and helium.)