4. (10 pts) In a psychological experiment, participants were shown a series of images of common household items and asked to recall them each minute after the experiment. The percentage of
participants who recalled the images after t minutes is given by the equation R(t) = 85 - 30 In t.
a. What percentage of participants recalled the images after 1 minute? Round to 2 decimal
places.
b. Calculate R'(3) and explain its meaning in a complete sentence.

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: b.36 feet

step-by-step explanation:

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