Trends in Physical Properties|Ionization Enthalpy

Trends in chemical properties

Trends in chemical properties

Ionization enthalpies are

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

Trends In Atomic & Physical Properties|Flame Test|Questions

The properties of the elements (atomic/ionic radii, electron gain enthalpy, ionization enthalpy, electronegativity, valence, oxidising/reducing power, acid/base character, etc.) which are directly or indirectly related to their electronic configirations are called periodic properties. These properties show a regular gradation on moving from left to right in a period or form top to bottom in a group. Down a group, the atomic/ionic radii, metallic character and reducing character increase while ionization enthalpy and electronegativity decrease. Along a period from left to right, atomic/ionic and metallic character decrease while ionization enthaloy, electronegativity, non-metallic character and oxiding power increase. However, electron gain enthalpy becomes less negative down a group butmore negative along a period. In contrast, inert gases have positive electron gain enthalpies which do not show may regular trend. Which of the following isoelectronic ions has the lowest first ionization enthalpy?

Physical Properties |Chemical Properties|Summary

Introduction|Group 13 Elements: The Boron Family|Electronic Configuration|Ionization Enthalpy|Electronegativity |Physical Properties|Summary

P Block Elements|F-Family (Halogens)|Occurrence|Electrocin Configuration|Atomic / Ionic Radii|Electron Gain Enthalpy |Ionisation Enthalpy|Electronegativity|Physical Properties|Chemical Properties|OMR|Summary