Verified Solution • 2025–26 Session
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QJEEM21Ch3de7: JEE Main 2021 Chemistry - Class 12 JEEM21Ch3de7 Solution: What is the correct order of the following elements with…
What is the correct order of the following elements with respect to their density?
Multiple Choice Options
- A Cr < Zn < Co < Cu < Fe
- B Cr < Fe < Co < Cu < Zn
- C Zn < Cr < Fe < Co < Cu
- D Zn < Cu < Co < Fe < Cr
Step-by-Step Verified Solution
Generally, due to decrease in metallic radius and increase in atomic mass density increase across the period from left to right.
| Metal | Density |
|---|---|
| Zn | 7.13 |
| Cr | 7.19 |
| Fe | 7.8 |
| Co | 8.7 |
| Cu | 8.9 |
Correct order is Cu > Co > Fe > Cr > Zn.