Group 16 elements have a lower value of first ionization enthalpy as compared to group 15 elements because:
Elements of Group 16 have 6 valence electrons. The valency of Group 16 elements is:
The elements of groups,1, 2, 13, 14, 15, 16 and 17 are collectively called
Among group 15 elements, the one having a negative electron affinity is:
Assertion: Ionisation enthalpy of group 16 elements is lower than that of group 15 elements.
Reason: On moving left to right in a period, effective nuclear charge increases.
Group 15 elements has higher ionization enthalpy as compared to group 14 elements due to: