Which of the following best describes a pair of elements that will form an ionic bond?
O C and H: Hydrogen easily loses electrons, and carbon gains them.
O Li and O: Oxygen easily loses electrons, and lithium gains them.
O P and Cl: Phosphorus easily loses electrons, and chlorine gains them.
O Ca and Br: Calcium easily loses electrons, and bromine gains them.

Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next