Answer:
B
Explanation:
As you can see in these 4 examples, B- looks completely different from A, C, D! In B: The reactants and products are completely different in the Element Figures.
D is incorrect it is not a compound.
The atomic number tells you the number of electrons. That means there are 18 electrons in an argon atom.
Answer is in the photo. I can only upload it to a file hosting service. link below!
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Answer:
As^3-, Se^2-, Br^-, Rb^+, Sr^2+
Explanation:
