Atomic structure and Isotopes Quiz - Quizizz. The mass number of an element that has 18 protons, 18 electrons, and 19 neutrons<span> is The atomic number of an element that has </span>9 protons<span>, 9 electrons, and </span>10 neutrons<span> is</span>
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Answer:
The empirical formula would be AlCl₃
Explanation:
The ratio of number of moles of each reacted specie can help to determine the empirical formula
moles of Al
moles of Cl
Ratio of moles
Empirical formula
Calculation shows that the number of moles of chlorine are three times higher than aluminium, hence empirical formula would be AlCl₃