How many valence electrons are found in the outermost energy level of lithium (li)? a-1 b-2 c-3 d-4

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.

What produces wave a)sound b) heats c)transfer of energy d)vibrations

If you reacted 450 g of trimethylgallium with 300 g of arsine, what mass of gaas could you make?