Ionization enthalpy and atomic radius are closely related properties. Analyse the following graph:
What conculation can you derive from the graph regarding the first ionization enthalpies of alkali metals and noble gases ? Justyfy.

Analyse the following graph between ionisation enthalpy and atomic number.

The reactivity of an element is very much related to its ionization enthalpy. Observe the following graph in which the first ionization enthalpies (DeltaH_1) of elements of the second period are plotted against their atomic numbers (Z): Identify the anomalour values and justify.

A graph of atomic radius versus atomic number is given below. Using the above graph, how will you accoun for the variation of ionization enthalpy in a period?

Mosely modified Mendeleev's periodic law based on his observation on the X-ray spectra of elements. Analyse the following graph, between ionization enthalpy and atomic number. What do you observe from the graph? Give justification for your observation.

The reactivity of an element is very much related to its inoization enthalpy. Observe the following graph in wich the first ionozation enthalpies (delta_1H) of elements of the sercond period are ploptted agiains their atomic number (Z):

Which one of the following statements is incorrect in relation to ionization enthalpy? (1)Ionization enthalpy increases for each successive electron.(2)The greatest increase in ionization enthalpy is experienced on removal of electron from core noble gas configuration (3)End of valence electrons is marked by a big jump in ionization enthalpy (4)Removal of electron from orbitals bearing lower n value is higher than from orbital having higher 'n' value.

A graph of aromic radius versus atomic number is given blow: Using the above graph, how will you account for the varitation of inoisation enthalpy in a period.

Atoms possessing stable configuration have less tendency to loss and consequently will have high value of ionization enthalpy. a) Justify this statement by taking the case of halffilled and completely filled configurations. b) The noble gases have highest ionization enthalpies in each respective periods. Why?

Among the elements of the third period, identify the element. a) With highest first ionization enthalpy. b) That is the most reactive metal. c) With the largest atomic radius.

A graph of atomic radius versus atomic number is given below. What do you understand from this graph?