MCQ
Identify a 'Chemical twin' among the followings.
- AZr - Ta
- BNb - Tc
- CHf - Re
- DNb - Ta
✓
Answer
- Nb - Ta
Explanation:
Chemical twins are those in which the properties of some elements are same. Atomic size of Zr and Hf , Nb and Ta are similar. This is due to lanthanide contraction.
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