What does the position of lithium on the periodic table tell you about its tendency to react with other elements?
a) it is in the second row, so it tends to gain two electrons
b) it is in the second row, so it tends to lose two electrons
c) it is in the first column, so it tends to lose one electron
d) it is in the first column, so it tends to gain one electron

Smog is the term used to describe the combination of fog and smoke

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

What is the subscript for oxygen in its molecular formula