What is the name of the element with atomic number $105$?
- AKurchatovium
- BDubnium
- CNobelium
- DHolmium
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Out of all the known elements,the number of transition elements is:
Easy
View SolutionWhich of the $3d$ series of the transition metals exhibits the largest number of oxidation states and why?
Medium
View SolutionThe correct set of ions (aqueous solution) with the same colour from the following is:
Which of the following factors may be regarded as the main cause of lanthanide contraction?
Highest $(+7)$ oxidation state is shown by
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