Which of the following nonmetals can conduct electricity relatively well? carbon
bromine
iodine
sulfur

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

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy