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Metallic radii of some transition elements are given below. Which of these elements will have highest density ? {:("Element",Fe,Co,Ni,Cu),("Metallic radii"//p m,126,125,125,128):}"

Answer»

Fe
Ni
CO
CU

Solution :DENSITY `=` Mass `// ` volume . As we move from Fe to Cu, mass INCREASES and volume decreases. Hence, density increases `[Fe(7.87) , Co( 8.90) , Ni( 8.91) , Cu( 8.95)]`. Increases in mass in case of Cu DOMINATES over small increase involume.


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