What is the charge of a magnesium ion that has lost its two valence electrons?
+1
+2
-1
-2

+2

Explanation:

The answer would be +2. For every electron lost, the element would gain a positive charge, such as +3 or +5. For example, oxygen has 8 total electrons. If it lost say, 4 of them, then oxygen would have a positive charge of +4. Hope this helped you!

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.