What would be the formula for a compound formed between any group 2 element, M, and any group 17 element, X?AM3X2BMXCM2XDMX2

The formula for a compound formed between any group 2 element, M, and any group 17 element, X, would be MX2.

Here's why:

1. Elements in group 2, such as magnesium (Mg) or calcium (Ca), have two valence electrons. They tend to lose these two electrons to achieve a stable electron configuration, forming a +2 cation.

2. Elements in group 17, such as chlorine (Cl) or fluorine (F), have seven valence electrons. They tend to gain one electron to achieve a stable electron configuration, forming a -1 anion.

3. When these two groups combine to form a compound, the group 2 element (M) will need to combine with two of the group 17 elements (X) to balance the charges. This results in the formula MX2.

So, the correct answer is D: MX2.