12. Molecular Shapes & Valence Bond Theory

Which of the following best describes the bond angle in a molecule of carbon dioxide (CO_2)?

What is the value of the bond angles in BCl_3?

How does the presence of lone-pair electrons affect the bond angles in a molecule?

What is the approximate Cl–Xe–Cl bond angle in the molecule XeCl_4?

Which of the following is closest to the bond angle found in a molecule with trigonal pyramidal geometry?

What is the value of the smallest bond angle in XeCl4?

In the actual molecule of water (H_2O), which has a bent geometry, what are the approximate values of the bond angles a (H–O–H) and b (O–H–lone pair)?

Which factor is primarily responsible for the difference in bond angles between carbon dioxide (CO_2) and water (H_2O)?

What is the approximate bond angle in the nitrate ion, NO_3^-?

What is the approximate bond angle between the chlorine atoms in iodine trichloride (ICl_3)?

4. What effect does the presence of lone-pair electrons have on the bond angles in a molecule?

Consider the methane molecule (CH_4). Which of the following bond angles is not present in this molecule?

Based on the bond angles in CH_4, NH_3, and H_2O, which molecule experiences the greatest magnitude of electron pair repulsions around the central atom?

What is the approximate value of the bond angle in the molecule CH2O (formaldehyde)?

What are the expected bond angles in the ICl_4^+ ion?