Alexandra needed to get her computer fixed. She took it to the repair store. The technician at the store worked on the computer for 5.25 hours and charged her $58 for parts. The total was $661.75. Write and solve an equation which can be used to determine xx, the cost of the labor per hour.

1,645,493,059.35

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.