Which of the following statements are incorrect?
A. The 
electron in lithium is shielded from the nucleus by the inner core of 
electrons.
B. Electron gain enthalpy provides a measure of the ease with which an atom adds an electron to form cation.
C. The process of adding an electron to the atom will be only exothermic in nature.
D. Electron gain enthalpies have large negative values towards the upper right of the periodic table preceding the noble gases.
E. The variation in electron gain enthalpies of elements is less systematic than for ionisation enthalpies.
Choose the correct answer from the options given below.
Text Solution
Verified by ExpertsC
Among the given statements, only two statements B and C are incorrect while other statements A, D and E are correct. Their correct form are
• Electron gain enthalpy provides a measure of the ease with which an atom adds an electron to form anion.
• The process of adding an electron to the atom can be either endothermic or exothermic.
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