Metallic radii of some transition elements are given below. Which of these elements will have highest density?
Element
$$Fe$$
$$Co$$
$$Ni$$
$$Cu$$
Metallic radii/pm
126
125
125
128
A.
$$Fe$$
B.
$$Ni$$
C.
$$Co$$
D.
$$Cu$$
Answer :
$$Cu$$
Solution :
All the four metals have nearly the same metallic radii and hence nearly the same atomic volume. On account of higher atomic mass of copper it has high density amongst given metals.
Releted MCQ Question on Inorganic Chemistry >> D and F Block Elements
Releted Question 1
When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volume of hydrogen evolved is