Advertisements
Advertisements
प्रश्न
Write the number of unpaired electrons in Cr3+.
(Atomic number of Cr = 24)
Advertisements
उत्तर
The electronic configuration of
Cr = [Ar]3d54s1
Cr3+ = [Ar]3d3
Hence there are 3 unpaired electrons in Cr3+.
APPEARS IN
संबंधित प्रश्न
Why do interstitial compounds have higher melting points than corresponding pure metals?
Why are Mn2+ compounds more stable than Fe2+ towards oxidation to their +3 state?
Predict which of the following will be coloured in the aqueous solution?
Ti3+, V3+, Cu+, Sc3+, Mn2+, Fe3+ and Co2+. Give reasons for each.
Although \[\ce{Cr^3+}\] and \[\ce{Co^2+}\] ions have same number of unpaired electrons but the magnetic moment of \[\ce{Cr^3+}\] is 3.87 B.M. and that of \[\ce{Co^2+}\] is 4.87 B.M. Why?
A solution of \[\ce{KMnO4}\] on reduction yields either a colourless solution or a brown precipitate or a green solution depending on pH of the solution. What different stages of the reduction do these represent and how are they carried out?
Answer the following question:
Which element of the first transition series has highest third ionisation enthalpy?
The basic character of transition metals monoxide follow the order.
Account for the following:
Transition metals form alloys.
Which of the following characteristics of transition metals is associated with their catalytic activity?
Compare the general characteristics of the first series of the transition metals with those of the second and third series metals in the respective vertical columns. Give special emphasis on the following point:
Oxidation states
