Trying to find the right answer to this..

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

The d-And-f-Block Elements

Short Answer Type

21. Why Pd is not called a transition elements?

217 Views

22. Why is the density of Zn lower than that of Cu?

212 Views

23. Atomic radius in a transition series does not vary much while that of s and p-block does. Why?

193 Views

24. Explain why iron is a transition element but sodium is not?

624 Views

25.

Why do the transition elements exhibit higher enthalpies of atomisation?

366 Views

26. Why is the enthalpy of atomisation increases upto the middle of the transition series and then decreases?

Enthalpy of atomisation depend upon the number of unpaired electron more is unpaired electron more is enthalpy of atomisation.Upto the middle of the series, the number of unpaired electrons increases and then decreases due to their pairing. This results first in the increase and then decrease in the value of enthalpy of atomisation.

410 Views