Answer:
D im pretty sure cuz i prob had this test already
Explanation:
Answer:
Combining the two clear colorless liquids is a chemical change.
Explanation:
Because a different solid substance is formed. Tell students that a precipitate is an insoluble solid that forms when two solutions are combined and react chemically. Insoluble means that the solid will not dissolve.
Astatine. Because it has the smaller shell of electrons. I believe
Here is a picture of which shows you how many valence electrons are in the Lewis structure of xeo4
