The three sides of an equilateral triangle are increased by 20 cm, 30 cm,
and 40 cm, respectively. the perimeter of the resulting triangle is between
twice and three times the perimeter of the original triangle. what can you
conclude about the length of a side of the original triangle?

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'm not really sure how to answer that

step-by-step explanation: