George and carmen went on a bicycle
trip. they took a bus to their starting
point, and then biked the rest. they
traveled 350 kilometers in total, and
they biked 80 kilometers more than they
were bussed.
let x - kilometers traveled by bike and
y - kilometers traveled by bus.

i believe the correct answer is b.

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.

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