Respuesta :

Emma12321
Maybe sodium? becasue its an element and I would like some points... sorryy:((((
tatendagota

Answer:

Carbon

Explanation:

Data:

The element must have the configuration:

1s². 2s²2p²

In other words, the number of valence electrons should be 4 (2s²2p²). Looking at the periodic table, carbon fits the criteria.