The angle between the hydrogen atoms in water (h2o) is slightly less than expected for a tetrahedral shape. this is because of the
extra electron repulsion from the lone pairs.
atomic radius of the oxygen atom.
additional repulsion of the shared electrons.
extra repulsion of the hydrogen atoms.

Iknow #2 is d. i just need to know why

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

How do limiting factors most affect population size? ostop population growthrestrict population growthincrease population sizeresult in positive impactso