Which element from following does NOT exhibit spin only magnetic moment in +3 state?

Which from following cations in their respective oxidation states develops colourless aqueous solution?

Oxidation state of manganese in potassium permanganate is:

Which of the following elements is doped with to obtain fibre amplifiers for optical fibre communication system?

Identify lanthanoid element from following.

What is the stock notation of Manganese dioxide?

Which from following statements regarding transition elements is NOT CORRECT?

Identify the element from following having six unpaired electrons in observed electronic configuration?

What are different possible oxidation states exhibited by scandium?

Find the value of spin only magnetic moment for chromium cation in +2 state.

Which element among the following is ferromagnetic?

Which property from following is NOT exhibited by interstitial compounds?

What are the formulae of the compounds formed when lanthanoids (Ln) react with nitrogen and halogen respectively?

Which among following properties of lanthanoids is NOT true?

Which among the following elements has completely filled 4d-orbital?

Identify the correct statement about properties of interstitial compounds.