Question

fill in the table below with the elements involved in bond, lewis dot structure, formula, and ratio.
elements bonded
ba and p

1. what is the correct formula?

bap₂
ba₃p₂
ba₂p₃
bap₃

Explanation:

Step1: Determine the charges of ions

Barium (\(Ba\)) is in group 2 of the periodic table, so it forms \(Ba^{2 +}\) ions. Phosphorus (\(P\)) is in group 15, and it forms \(P^{3-}\) ions.

Step2: Use the criss - cross method

To form a neutral compound, we use the criss - cross method. The magnitude of the charge of one ion becomes the subscript of the other ion. So for \(Ba^{2+}\) and \(P^{3 -}\), the formula is \(Ba_3P_2\) (because \(2\times3 = 3\times2\) to balance the charges: \(3\times(+ 2)+2\times(-3)=6 - 6=0\)).

Answer:

\(Ba_3P_2\) (corresponding to the option \(Ba_3P_2\))