Home
Class 11
CHEMISTRY
Why do group 1 metals have lower first ...

Why do group 1 metals have lower first ionisation Enthalpy than corresponding group 2 metals.

Text Solution

Verified by Experts

(i)Size of 1st group metals is greater than size fo 2nd group metals, hence effective nuclear charge increase of 2nd group metals.
(ii) Upon losing one electron 1st group metals attain stable octet structure.
Promotional Banner

Topper's Solved these Questions

  • PUE DEPT. MODEL QUESTION PAPER

    SUBHASH PUBLICATION|Exercise PART-C|14 Videos

  • PUE DEPT. MODEL QUESTION PAPER

    SUBHASH PUBLICATION|Exercise PART-A|11 Videos

  • P-BLOCK ELEMENTS

    SUBHASH PUBLICATION|Exercise Three mark questions and answers|24 Videos

  • REDOX REACTIONS

    SUBHASH PUBLICATION|Exercise Three Marks Questions|29 Videos

Similar Questions

Explore conceptually related problems

Why do alkali metals have low ionisation enthalpy?

How does ionisation enthalpy varies among group 13 elements .

Why do alkali metals have low ionisation energy ?

Noble gases have very high ionisation enthalpy. Why ?

Group - 16 elements have lower ionisation enthalpy values compared to those group - 15 elements in the corresponding periods. Give reason.

Account for the following : (i) Ammonia is more basic than phosphine. (ii) Elements of Group - 16 generally show lower value of first ionisation enthalpy compared to the elements in the corresponding periods of Group - 15. (iii) Electron pair gain enthalpy with (-)ve sign for fluorine is less than that for chlorine.

Alkali metals have law ionization energy why ?

Explain ionisation enthalpy of group 14 elements .

Why the oxides of Group 2 metals have high melting points?