Consider the following statement
I.Electron gain enthalpy becomes more negative with increase in atomic number across a period
II.Effective nuclear charge increases from left to right across period
III.Electron gain enthalpy becomes less negative as we go up a group
Choose the correct option

Consider the following statement I.Electron gain enthalpy becomes more negative with increase in atomic number across a period II.Effective nuclear charge increases from left to right across period III.Electron gain enthalpy becomes less negative as we go up a group Choose the correct option

Which of the following atom has towest negative electron gain enthalpy?

Account fot the following: The electron gain enthalpy of Cl (Z = 17 )is more negative than that of Fluorine ( Z = 9 ).

Statement-1 : First electron gain enthalpy is alway -ve for an element. Statement-2 : Magnitude of electron gain enthalpy irregularly increases from left to right in a period.

Assertion:For the elements O or F,the electron gain enthalpy is less negative than that of the succeeding element. Reason:Electron gain enthalpy becomes less negative as we go down a group.

Give reason for the following. a) The electron gain enthalpy of O is less negative than that of S. b) The size of anion is larger than the parent atom.

In which of the following options order of arrangement does not agree with the variatioin of property indicated against it? Thinking process. i) The ionic size increases as the positive charge on the cation decreases or the negative charge on the anion increases. ii) First ionisation enthalpy increases from left to right in the periodic table. iii) Electron gain enthalpy increases as the electronegativity of the atom increases. iv) The metallic character increases as the size of the metal atom increases.

the correct order of electron gain enthalpy with negative sign of F,Cl,Br and I , having atomic number 9,17,35 and 53 respectively is