Abox contains 19 large marbles and 10 small marbles. each marble is either green or white. 8 of the large marbles are green, and 4 of the small marbles are white. if a marble is randomly selected from the box, what is the probability that it is small or white? express your answer as a fraction or a decimal number rounded to four decimal places.

25/29

Step-by-step explanation:

see the attached picture.

the barter

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.