John must have at least 289 test points to pass his math class. he already has test scores of 72, 78, and 70. which inequality will tell him at least how many more points he needs to pass the class? a. 72 + 78 + 70 + x 289 b. 72 + 78 + 70 + x > 289 c. 72 + 78 + 70 + x < 289 d. 72 + 78 + 70 + x 289

B. 72 + 78 + 70 + x > 289

boxplot

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.