Question

decide whether each molecule or polyatomic ion is polar or nonpolar. if the molecule or polyatomic ion is polar, write the chemical symbol of the atom closest to the negative side. for example, if the molecule were hcl and you decided the hydrogen atom was closest to the negative side of the molecule, youd enter \h\ in the last column of the table. molecule or polyatomic ion polar or nonpolar? atom closest to negative side h₂o polar nonpolar sif₄ polar nonpolar hi polar nonpolar

Explanation:

Step1: Analyze H₂O

Water (H₂O) has a bent molecular geometry. Oxygen is more electronegative than hydrogen. The bond - dipoles do not cancel out, so it is polar. The oxygen atom is closest to the negative side as it attracts the shared electrons more strongly.

Step2: Analyze SiF₄

Silicon tetrafluoride (SiF₄) has a tetrahedral molecular geometry. The bond - dipoles are symmetrically arranged and cancel out, so it is non - polar.

Step3: Analyze HI

Hydrogen iodide (HI) is a diatomic molecule. Iodine is more electronegative than hydrogen. The bond has a dipole moment, so it is polar. The iodine atom is closest to the negative side.

Answer:

molecule or polyatomic ion	polar or nonpolar?	atom closest to negative side
SiF₄	nonpolar
HI	polar	I