Chang wants to know if he is improving his skill on the cello. He created a scatter plot and drew a line of best fit. If he uses the point (2,8) and (5,1.5) from his line, which equation would best represent the line of best fit? 10 (2,8) Number 8 Mistakes Played 6 A) y = -2.17x + 12.3 B) y = 2.17x + 3.77 C) y = -0.46x + 9 D) y = -2.17x - 9.35 4 (5,1.5) 1 5 Time Practicing (hours)

good job you smart son of a gun you are smarter that einstein. 7

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.