Advertisements
Advertisements
Question
The second ionization enthalpies of chromium and manganese are 1592 and 1509 kJ/mol respectively. Explain the lower value of Mn.
Advertisements
Solution
Mn+ has 3d54s1 configuration and configuration of Cr+ is 3d5, therefore, ionisation enthalpy of Mn+ is lower than Cr+.
APPEARS IN
RELATED QUESTIONS
Why do interstitial compounds have higher melting points than corresponding pure metals?
Give reasons Iron has the higher enthalpy of atomization than that of copper.
The paramagnetic character in the 3d-transition series elements increases up to Mn and then decreases.
Why do transition elements show variable oxidation states ? In 3d series (Sc to Zn), which elements shows the maximum number of oxidation state and why ?
When \[\ce{KMnO4}\] solution is added to oxalic acid solution, the decolourisation is slow in the beginning but becomes instantaneous after some time because ______.
Sodium this sulphate is used in photography because of its:-
A complex in which dsp2 hybridisation takes place is ______.
Why is the `"E"_(("V"^(3+)//"V"^(2+)))^"o"` value for vanadium comparatively low?
Which property of transition metals enables them to behave as catalysts?
Explain the use of different transition metals as catalysts.
