Which of the following statements is incorrect for the pair of elements $Zr$ and $Hf$?
- ABoth possess the same number of valence electrons
- BBoth have identical atomic sizes
- CBoth have almost identical ionic radii
- DBoth of these belong to the same period of the periodic table
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Similar Questions
Match the following elements in List-$I$ with their respective groups in List-$II$.
List-$I$ (Elements) List-$II$ (Group) $A$. $Mn, Tc, Re$ $IV$. $7$ $B$. $Zn, Cd, Hg$ $I$. $12$ $C$. $Ti, Zr, Hf$ $II$. $4$ $D$. $Ga, In, Tl$ $V$. $13$
The correct answer is:
| List-$I$ (Elements) | List-$II$ (Group) |
| $A$. $Mn, Tc, Re$ | $IV$. $7$ |
| $B$. $Zn, Cd, Hg$ | $I$. $12$ |
| $C$. $Ti, Zr, Hf$ | $II$. $4$ |
| $D$. $Ga, In, Tl$ | $V$. $13$ |
The correct answer is:
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