Answer:
19 protons, 19 electrons, and 3 neutrons
Explanation:
the atomic number is 19 so the protons are the same, 19, and the electrons are the same as the proton, because protons are positive and electrons are negative so they have to balance out and the neutrons ➗ mass number by the atomic number.
The answer is C.
example: 3NaCl + Al ----> AlCl₃ + 3Na
It is A. This is because the rate of reaction is defined as the speed at which the reactants are converted into the products.
