Which one of the following atoms has the smallest radius?
2 points
A) I
B) Co
C) Ba
D) Cl
E) Ca
Pls help

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.