Question

12 choose the best answer using the periodic table. what is the formula for this compound, dinitrogen trioxide? \\(\ce{n2o5}\\) \\(\ce{no3}\\) \\(\ce{n2o}\\) \\(\ce{n2o3}\\) 14 choose the best answer using the periodic table. which type of bond is likely to form between bromine (br) and oxygen (o) atoms? covalent bond metallic bond polar covalent bond ionic bond 13 choose the best answer using the periodic table. which type of bond forms between cesium (cs) and fluorine (f) atoms? hydrogen bond covalent bond ionic bond metallic bond

Explanation:

Step1: Analyze Q13: Dinitrogen trioxide

"Dinitrogen" = 2 nitrogen ($N$) atoms, "trioxide" = 3 oxygen ($O$) atoms. Formula: $N_2O_3$.

Step2: Analyze Q14: Br and O bond type

Both Br and O are nonmetals. Nonmetals form covalent bonds; their electronegativity difference is small but non-zero, so it is a polar covalent bond.

Step3: Analyze Q15: Cs and F bond type

Cs is a group 1 metal, F is a group 17 nonmetal. Metals and nonmetals form ionic bonds.

Answer:

1. $\boldsymbol{N_2O_3}$
2. $\boldsymbol{polar\ covalent\ bond}$
3. $\boldsymbol{ionic\ bond}$