How many cl- ions are there in 400.5 grams of alcl3?

a. 9.000 ions
b. 1.500 x 10^-23 ions
c. 1.810 x 10^24 ions
d. 5.420 x 10^24 ions

The answer to your question is letter A

Explanation:

Process

1.- Calculate the molecular mass of AlCl₃

Al = 1 x 27 = 27

Cl = 3 x 35.5 = 106.5

AlCl₃ = 27 + 106.5 = 133.5

2.- Find the number of ions of Cl using proportions

               133.5 grams of AlCl₃ 3 ions of Chlorine

               400.5 grams of AlCl₃   x

                x = (400.5 x 3) / 133.5

                x = 9

n has four pairs of electrons in the valence shell, electrons repel one another ,n has 7 protons in its nucleus, and since n has 7 protons, it must fill the second shell, giving it 4 pairs of electrons. the electrons form 3 bonds and 1 lone pair of electrons. each pair of electrons repels the other pairs, so they are equally far apart.

so all of the above