At a local college, 39 of the male students are smokers and 351 are non-smokers. Of the female students, 200 are smokers and 300 are non-smokers. A male student and a female student from the college are randomly selected for a survey. What is the probability that both are non-smokers

651 aren't you adding the 351 boys to the 300 girls that are non smokers

Step-by-step explanation:

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.