Question: What is the correct order of the following elements with respect to their density?
$\mathrm{Cr}<\mathrm{Fe}<\mathrm{Co}<\mathrm{Cu}<\mathrm{Zn}$
$\mathrm{Cr}<\mathrm{Zn}<\mathrm{Co}<\mathrm{Cu}<\mathrm{Fe}$
$\mathrm{Zn}<\mathrm{Cu}<\mathrm{Co}<\mathrm{Fe}<\mathrm{Cr}$
$\mathrm{Zn}<\mathrm{Cr}<\mathrm{Fe}<\mathrm{Co}<\mathrm{Cu}$
Correct Option: , 4
Solution:
Fact Based
Density depend on many factor like atomic mass. atomic radius and packing efficiency.