Introduction to d and f Block Elements
Trending Questions
Q. Which of the following 3d-metal ion will give the lowest enthalpy of hydration (ΔhydH) when dissolved in water ?
- Mn2+
- Fe2+
- Cr2+
- Co2+
Q. Which of the following are d-block elements?
- Sodium
- Zinc
- Titanium
- Argon
Q. Which of the following statements is/are true?
- All lanthanides are radioactive.
- All actinides are radioactive.
- Both (A) and (B) are true.
- Both (A) and (B) are false.
Q. Which of the following do not form hydrides?
- Fe
- Co
- Ni
- Pd
Q. The transition metal among the following is .
- Zinc
- Cadmium
- Mercury
- Silver
Q. Match the following elements with their corrresponding transition series.
- 3d series
- 5d series
- 6d series
- 4d series
Q. Which of the following reagents give colored precipitate (except white and black) when treated with Lunar caustic?
- Na3PO4 solution
- Na2S2O3 solution (not excess)
- Na2CrO4 solution
- Na2S solution
Q. Group IA alkali metals form covalent hydrides - true or false?
True
False
Q.
What are the characteristics of the transition elements and why are they called transition elements? Which of the d-block elements may not be regarded as the transition elements?
Q.
What is the correct order of covalent size of the following ?
Cu ___ Ni- Cu < Ni
- Cu = Ni
- Cu > Ni
- None of these