For Exercises 41–43, use the bar graph below, which shows the number of cans of juice three sixth-grade classes drank. 41. In each class, what fraction of the cans were orange juice?
Mr. Chan’s Class: About ⅓ of the cans were orange juice.
Mr. Will’s Class:
Ms. Luke’s Class: About ¼ of the cans were orange juice.

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.

i think the answer is b