A made up element with a radius of 255 pm has a density of 4.75 g/cm3 and crystallizes in a face-centered cubic cell. Calculate the molar mass of the element in g/mol.

so what is the problem with your lab report and whats the subject of the lab report? i will you

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.