Question

what is the empirical formular of the compound formed by

Answer 1

a) \[\large Al^{3+}\text{and } Cl^{-}\]
b)\[\large Al^{3+}\text{and } O^{2-}\]
c)\[\large Mg^{2+}\text{and } NO_2^{-}\]

Answer 2

is this the corresponding chemical formular

a)\[\large Al_2Cl\]

b)\[\large Al_2O_3\]

c)\[\large MgNO\]

Answer 3

b is correct, but a and c need work. Al has a +3 charge, and Cl has a -1.

If you put together 2 Al ions, each of which is a +3, that's a charge of +6. There must be a a balance of charge in ionic compounds, so that the sum of the pieces adds up to zero.

Answer 4

a) AlCl_3
c) Mg(NO_3 )_2.

Answer 5

yes