Given the following information, identify the group from the periodic table that contains elements that behave like

Question:

Given the following information, identify the group from the periodic table that contains elements that behave like main-group element “E.”
(i) The electron affinity of E is greater than zero.
(ii) The ionization energy (IE) trend for element E is: first ionization energy < second ionization energy <<< third ionization energy.
(iii) Samples of E are lustrous and are good electrical conductors.