Four successive members of the first row transition elements are listed below with their atomic numbers. Which one of them is expe..
Mercury is the only metal which is liquid at 0Â°C. this is due to its
The main reason for larger number of oxidation states exhibited by the actinoids than the corresponding Lanthanoids
A transition element X has a configuration [Ar]3d4 in its + 3 oxidation state. Its atomic number is
The general electronic configuration of transition elements is
The aqueous solution containing which one of the following ions will be colourless
Among the following series of transition metal ions, the one in which all metals ions have 3d2 electronic configuration is
The lanthanide conctraction is responsible for the fact that
Which of the following ionic species will impart colour to an aqueous solution
Which of the following has the maximum number of unpaired d-electrons
The correct order of ionic radii of Y3- , La3+ ,Eu3+ and Lu3+ is
Highest (+7) oxidation state is shown by
Which one of the following characteristic of the transition metals is associated with their catalytic activity
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