Use the periodic table below. Rubidium (Rb) bonds with another atom to form a stable molecule with the formula RbX. What could be true about element 'X'? (3 points) Responses It could be a halogen. It could be a halogen. It could require 1 valence electron. It could require 1 valence electron. It could have an oxidation state of -1. It could have an oxidation state of -1. It could have 1 valence electron.
Based on the information given, we can determine the following about element 'X':
1. It could be a halogen: Halogens are elements in Group 17 of the periodic table, and they typically require one additional valence electron to achieve a stable electron configuration. Since Rb has one valence electron and is likely to lose it in a bond, element 'X' could potentially be a halogen to gain that electron.
2. It could require 1 valence electron: As mentioned above, halogens typically require one additional valence electron to achieve a stable electron configuration. Therefore, if 'X' is a halogen, it would need one valence electron to bond with Rb.
3. It could have an oxidation state of -1: In a stable RbX molecule, the halogen 'X' would typically have a charge or oxidation state of -1 since it gains one electron from the bond with Rb. This is because Rb loses one valence electron.
So, all three statements are true about element 'X': it could be a halogen, it could require 1 valence electron, and it could have an oxidation state of -1.