Question:medium
Consider the following pairs of elements and identify the pairs of elements which have nearly same atomic radius.
I. Y, La
II. Zr, Hf
III. Mo, W
IV. Cr, Mo
Consider the following pairs of elements and identify the pairs of elements which have nearly same atomic radius.
I. Y, La
II. Zr, Hf
III. Mo, W
IV. Cr, Mo
Show Hint
Due to the Lanthanide Contraction, pairs of elements in the same group from the second (4d) and third (5d) transition series have very similar atomic radii. Look for pairs like (Zr, Hf), (Nb, Ta), (Mo, W), etc.
Updated On: Mar 30, 2026
- I & II
- II & III
- III & IV
- I & III
Show Solution
The Correct Option is B
Solution and Explanation
Was this answer helpful?
0
Top Questions on Classification of elements and periodicity in properties
- Among the following the isoelectronic species are
I. $Mg^{2+}, Al^{3+}, F^-$
II. $O^{2-}, F^-, N^{3-}$
III. $K^+, Ca^{2+}, Sc^{3+}$
IV. $Mn^{2+}, Fe^{3+}, V^{3+}$- TS EAMCET - 2025
- Chemistry
- Classification of elements and periodicity in properties
- Identify the correct orders regarding atomic radii
i. $\text{Cl}>\text{F}>\text{Li}$
ii. $\text{P}>\text{C}>\text{N}$
iii. $\text{Tm}>\text{Sm}>\text{Eu}$
iv. $\text{Sr}>\text{Ca}>\text{Mg}$- TS EAMCET - 2025
- Chemistry
- Classification of elements and periodicity in properties
- In hydrogen atom, an electron is transferred from an orbit of radius $1.3225$ nm to another orbit of radius $0.2116$ nm. What is the energy (in J) of emitted radiation? (Rydberg constant $R_H \approx 1.097 \times 10^7 \text{ m}^{-1}$)
- TS EAMCET - 2025
- Chemistry
- Classification of elements and periodicity in properties
- Match the following
- TS EAMCET - 2025
- Chemistry
- Classification of elements and periodicity in properties
- Want to practice more? Try solving extra ecology questions todayView All Questions