Periodic Trends | Part 2

Periodic Trends In Physical Properties|Merits Of Long Form Of Periodic Table|Periodicity In Physical Properties|Lanthanide Contraction|OMR

Summary|Conclusion Of Periodic Trends|Problems|Questions|Diagonal Relationship|OMR|Summary

Periodic Trend |Atomic Radii |Ionic Radii|Ionisation Enthalpy |Electron Gain Enthalpy|Electronegativity |OMR|Summary

What is meant by periodic trends in the modern periodic table ?

Revision|Electron Gain Enthalpy|Periodic Trend|OMR

Anomalous Properties Of Second Period Elements|Diagonal Relationship|Periodic Trends And Chemical Reactivity|Exercise Questions|Summary

Periodic Trends In Chemical Properties|Variation Along Period|Variation In A Group|Exercise Questions

What is the periodic trend in the variation of valency while going from left to right within a period? Explain your answer with reference to period 2 and 3.