in a class of 60 student, the number of student who passed biology is 6 more than the number who passed chemistry every student passed both at least one of the two subjects and 8 student passed both subject

Firstly we need to find how many students passed chemistry or biology

60-8=52 studdnts passed biology or chemistry

Let number of students who passed chemistry is x, than number of students who passed biology is 52-x.

So, 23 students passed chemistry, than

23+6=29 students passed biology

23 students passed chemistry and 29 students passed biology

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 answer is 62.8 cubic units