Total distance Use the formula (average rate) = Total time to solve the following problem.
Jamel went on a short trip to visit a friend who lives 22 miles away. The trip there took 1/3 of an hour, and the trip back home took 1/2 of an hour. What was his average rate for the trip? Write your answer in fraction form.

47 - 90 = 43

43 - 180 = x

x = 137

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.