Chemistry

Chemistry

Problem

Three third-period elements are labeled A, B, and C. Partial successive ionization energies (kJ mol−1\text{kJ}\,\text{mol}^{-1}) for the gaseous atoms are provided. A: IE1\mathrm{IE}_{1} 496, IE2\mathrm{IE}_{2} 4560, IE3\mathrm{IE}_{3} 6910 B: IE1\mathrm{IE}_{1} 1012, IE2\mathrm{IE}_{2} 1900, IE3\mathrm{IE}_{3} 2910, IE4\mathrm{IE}_{4} 15 800 C: IE1\mathrm{IE}_{1} 786, IE2\mathrm{IE}_{2} 1577, IE3\mathrm{IE}_{3} 3220, IE4\mathrm{IE}_{4} 4350, IE5\mathrm{IE}_{5} 16 100 Which sequence orders the elements by increasing atomic number? a) C<A<BC < A < B b) A<B<CA < B < C c) A<C<BA < C < B d) B<A<CB < A < C

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