In triangle abc above, angle a is bisected into two 60° angles. if ad = 10, and ab = 2(ac), what is the length of bc?

you didn't give me the choices, so i will just give you the graph so you can look at your choices and choose the right one.

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.

the answer is 13 cm