Mai and Tyler were standing at one corner of a large rectangular field and decided to race to the opposite corner. Since Mai had a bike and Tyler did not, they thought it would be a fairer race if Mai rode along the sidewalk that
surrounds the field while Tyler ran the shorter distance directly across the
field. The field is 100 meters long and 80 meters wide. Tyler can run at a
constant rate of 5 meters per second, and Mai can ride her bike at a constant
rate of 7.5 meters per second.

Who wins?
Show your work.

Maya wins. she is only 0.6 seconds behind so it it is a fair race.

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.