Metallic niobium forms body-centered cubic unit cells with α = 0.330 nm at 18℃. calculate the atomic radius of niobium using this information.
if you could give me step by step directions, i would really appreciate it.

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

the maximum mass of nh3 is nh3 in grams

catya that's not even a b or c