how do you determine the fraction of parent isotope remaining after 20,000 years if the isotope used has a half life of 5000 years

the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x

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.

the photograph is photographer and- in the process- ourselves.

step-by-step explanation:

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