1 Which situation can be represented by the equation -4*5=-20 ? A . Jack exercised for 4 hours after school each day last week.
B. The cost of a summer pool pass increased $4 each of the last 5 years.
C. Amanda earned $4 for each of 5 classes in which she received an A.
D . The temperature dropped 4 degrees each hour for 5 hours.

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.

answer

step-by-step explanation: