35 Marks ALL BUT ONE of the following sentences provide reasonable explanations for the overall trend and the irregulari

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35 Marks All But One Of The Following Sentences Provide Reasonable Explanations For The Overall Trend And The Irregulari 1 (542.97 KiB) Viewed 22 times

35 Marks ALL BUT ONE of the following sentences provide reasonable explanations for the overall trend and the irregularities observed in the second ionization energies (ie., IE) of the elements whose cations are shown in the table. Identify the one statement that is INCORRECT LI Be В* C N O F Ne 1757 2427 2352 2856 3388 3374 IE [kJ/mol 7298 3952 O a. Fluorine monovalent cation has a less than expected second ionization energy because the F2 von is more stable than the F'ion. This happens because the F?' ion has the same occupancy in all the three orbitals of the p subshell, which confers this ion more stability Ob. The valence shell of Lit is on the 1st level of energy whereas the valence shell of Bet is on the 2nd That means valence electrons in the lithium ion "feel" a significantly higher effective nuclear charge, compared to those of beryllium. Additionally, Li" has a noble gas configuration. That is why the IE, of Li' is so much larger than the IE of Be The IE, of C is lower than the IE of B' because only one of the degenerate orbitals in the subshell of the carbon ion is partially occupied. That renders this ion fairly unstable, so, when this electron is removed, leaving a C²+ ion with a complete s subshell the energy requirement is far less than expected. Od. These elements are all on the same period. As their atomic numbers decrease, so does their effective nuclear charge, which causes the general trend of decreasing ionization energy as we move to the left of the periodic nr Sunny ОС,