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jonas dad dies

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.

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

What is the common name for the compound shown here? enter the common name of the compound shown?