In? 2002, the median ph level of the rain in a national park was 5.205.20. a biologist thinks that the acidity of rain has decreased since then.? (this would mean that the ph level of the rain has? increased.) she obtains a random sample of 1919 rain dates in 2008 and obtains the accompanying data. determine the? p-value of the hypothesis test performed in the statement.

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.

i need points

step-by-step explanation:

sorry bubs