Would you expect the second electron gain enthalpy O as positive, more negative or less negative than the first ? Justify your answer.

Account for the following: Electronic gain enthalphy of F is less negative than that of Cl

Among the carbonyl compounds “Ketones are less reactive than aldehydes”.Justify your answer.

The 4s subshell has more energy than 3p subshell. Is it true ? Justify your answer.

a) On moving down a group what happens to electron gain enthalpy? b) Why chlorine shows more negative electron gain enthalpy than fluorine?

Which of the following will have the most negative electron gain enthalpy and which the least negative ? P,S,Cl,F. Explain your answer.

Justify the following: The electron gain enthalpy of 'F' is lower than that of 'Cl .

Which one has higher electron gain enthalpy with negative slgn sulphur or Oxygen ?

The electron gain enthalpy values of halogens become more negative in the order: F gt C l gt B rgt I Comment on the statement.

To what extent do the electronic configuration decide the stability of oxidation states first series of the transition elements? justify your answer with examples."

Chlorine has the most negative electron gain enthalpy'. Justify the statement.