Two best friends are in a small class together which has 9 students in attendance. if the students are randomly assigned into two groups, one of size four and one of size five, what is the probability that the friends are assigned to the same group?

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.

answer: need a picture

step-by-step explanation:

what am i looking for finish the question.

step-by-step explanation:

it is a horizontal line.