Question

(1+1+3)
12. (1) Ionization enthalpy of Indium is lower than that of Gallium. Justify whether this
statement is True or False?
(ii) Between Be and B, which one will have greater shielding effect and why?
(iii) Justify giving suitable example that the properties of the elements are periodic
function of their atomic numbers.
(iv) Discuss the trend in electron gain enthalpy in 16h group.
(1+1+1+​

Answer 1

Answer:

(1) ionization enthalpy of indium is lower than that of Gallium because as we move from down the group sub shells are increasing the sheilding effect decreases. If the sheilding effect decreased we can easily to remove an elctron from the sub shell that is why indium has lower ionization energy energy than that of Gallium.