Suppose a jar contains 3 red marbles and 2 white marbles. If a marble is drawn at random, then replaced, and then another marble is drawn at random, what is the probability of:

a. drawing a red marble on both draws?

b. drawing a red marble, then a white marble?

c. drawing a white marble on both draws?

d. drawing a white marble, then a red marble?

5y

step-by-step explanation:

the answer is 1/4

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.