Question

fill in the table below with the elements involved in bond, lewis dot structure, formula, and ratio. 20. what is the correct formula? elements bonded cs and o cso₂ cs₂o₂ cso cs₂o

Explanation:

Step1: Determine the charges of ions

Cesium (\(Cs\)) is in Group 1 of the periodic table. So, \(Cs\) loses one electron to form \(Cs^+\) ion (\(Cs - e^-
ightarrow Cs^+\)). Oxygen (\(O\)) is in Group 16. \(O\) gains two electrons to form \(O^{2 -}\) ion (\(O+ 2e^-
ightarrow O^{2 -}\)).

Step2: Use the criss - cross method

For a compound formed between \(Cs^+\) and \(O^{2 -}\), to balance the charges, we need two \(Cs^+\) ions for each \(O^{2 -}\) ion. Using the criss - cross method (the magnitude of the charge of one ion becomes the subscript of the other ion), the formula is \(Cs_2O\).

Answer:

\(Cs_2O\) (the fourth option)