Redox reaction class 11th mind map

     Redox reaction class 11th mind map 

magnetism class 11th mind map

 magnetism class 11th mind map 

Modern Periodic table all physical and elemental properties

 Periodic table all physical and elemental properties 

                           # Atomic size #

Across the period atomic size decreases

Down the group atomic size  

Increses

                            #zeff#

Across the period Zeff   charge goes on increasing 

(because nucleus and electron attraction was increases )

Down the  gropu Zeff  charge goes on decreases 

(because nucleus and electron attraction was low )

            # Ionizationenthlpy (I. P.) #

             /ionization potential 

Define:- the energy required to remove an electron from the isolated gaseous atom in its ground state is called ionization enthlpy 

Across the period ( I.P.)  is increases

(atomic size decreases I. p increases) 

Down the group (I.P.) is   decreases 

(atomic size increases I. P.  Decreases) 

       #Electron gain enthelpy(egH) #

Define :- the enthalpy change that takes place when an electron is added to an isolated gaseous atom in its ground state is called the electron gain enthalpy

* More the (-ve )is electron gain enthalpy 

More is the stability of that species *

Across the period electron gain enthlpy is highly -ve

(atomic size small electron gain enthlpy is highly (-ve) )

Down the group electron gain enthlpy is low( -ve)

(atomic size big electron gain enthlpy is low( -ve) )

Smaller the size highly -ve will be it's egH (more stable) 

Bigger the size low  -ve will be it's 

egH (unstable) 

Periodic trends in metallic -nonmetallic 

Character 

Metalic character decreases across the period 

Metallic character increases down a group 

Nobel gases /inert gases  are highly positive electron gain enthlpy (because theyare    stability order is completed   ) 

Nonmetallic character increases across the period and decreases down the group

                       Mind map