The electronic structure of a sodium atom can also be represented as in the diagram below. Na
sodium
atom
(1) Draw a similar diagram for a fluorine atom.
Draw similar diagrams to show the electronic structure of the particles in
sodium fluoride.
(Tot​

Awhite powder is added to a solution. the images show observations made before the powder is added, just after the powder has been added, and a little while later. (the liquid in the small beaker is phenol red solution.) what evidence shows that a chemical change has taken place?