Ionization Energy of Lanthanides
Trending Questions
Q. In chromite ore, the oxidation number of iron and chromium are respectively
- +3, +2
- +3, +2
- +2, +6
- +2, +3.
Q. La, Gd and Lu have abnormally low third ionisation enthalpy values. Why?
- None of the above
- Because of decrease in ionic size
- Because of extra stability of f0, f7 and f14 orbitals
- Because of lanthanide contraction
Q. The first ionisation enthalpy of the elements are in the order of:
- C<Si<N<P
- N<Si<C<P
- Si<N<C<P
- none of the above
Q. La, Gd and Lu have abnormally low third ionisation enthalpy values. Why? ​
- Because of extra stability of f0, f7 and f14 orbitals​
- Because of decrease in ionic size
- None of the above
- Because of lanthanide contraction
Q. Identify the correct pair of colorless species-
- CoF3−6 and NiCl2−4
- TiF2−6 and CoF3−6
- TiF2−6 and Cu2Cl2
- Cu2Cl2 and NiCl2−4
Q. Which one is not interfering radical
- PO3−4
- BO3−3
- F−
- SO2−4