It was due to the metal foil in which the alpha particles can't even pass through. This experiment conducted by Rutherford led to the discovery of protons.
The correct answer is
<span>B. An attraction between the positive end of one molecule and the negative end of another.
Because the dipole is the molecule that has </span> the positive end and the negative end,
To indicate whether the elements is basic or acid by changing of colour.(advantage)
can give out bad gas which can cause suffocate to the people.(disadvantage).
I believe the answer is 11, its been awhile since i was in science