What is enthalpy of atomisation ? Explain. OR Write a note on enthalpy of atomisation.
What is enthalpy of atomisation ? Explain. OR Write a note on enthalpy of atomisation.
The energy required to form a $1$ mole of gaseous atoms from its element in its standard state is called standard enthalpy of atomisation.
The transition elements have high enthalpies of atomisation because of presence of strong bonds between the atoms. The enthalpy of atomisation increases with the increase in number of unpaired electrons which results in formation of strong bonds due to strong inter-atomic interactions.
The elements of $4 d$ and $5 d$ series have greater enthalpy of atomisation than corresponding
elements of first transition series which results in much more metal-metal bonding in compounds of the heavy transition elements.
Trends in enthalpies of atomisation of transition elements
In first transition series, $\mathrm{Zn}$ has minimum enthalpy atomisation because of absence of unpaired electrons.
Similar Questions
The metal that shows highest and maximum number of oxidation state is:
The metal that shows highest and maximum number of oxidation state is:
- [JEE MAIN 2024]
Properties common to the elements manganese, iron, cobalt, nickel and copper include the ready formation by them all of
$(I)$ coloured ions in aqueous solution
$(II)$ oxides of nitrogen are formed on reaction with concentrated $HNO_3$
$(III)$ chlorides of formula $MCl_2$ and $MCl_3$
Properties common to the elements manganese, iron, cobalt, nickel and copper include the ready formation by them all of
$(I)$ coloured ions in aqueous solution
$(II)$ oxides of nitrogen are formed on reaction with concentrated $HNO_3$
$(III)$ chlorides of formula $MCl_2$ and $MCl_3$
Copper displaces which of the metal from their salt solutions
Copper displaces which of the metal from their salt solutions
Explain the variations in atomic radii of transition elements in group.
Explain the variations in atomic radii of transition elements in group.
The anode mud in the electrolytic refining of silver contains
The anode mud in the electrolytic refining of silver contains