Three third-period elements are labeled A, B

CHEMISTRY · Single correct · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties

Problem

Three third-period elements are labeled A, B, and C. Partial successive ionization energies (

\text{kJ}\,\text{mol}^{-1}

) for the gaseous atoms are provided. A:

\mathrm{IE}_{1}

496,

\mathrm{IE}_{2}

4560,

\mathrm{IE}_{3}

6910 B:

\mathrm{IE}_{1}

1012,

\mathrm{IE}_{2}

1900,

\mathrm{IE}_{3}

2910,

\mathrm{IE}_{4}

15 800 C:

\mathrm{IE}_{1}

786,

\mathrm{IE}_{2}

1577,

\mathrm{IE}_{3}

3220,

\mathrm{IE}_{4}

4350,

\mathrm{IE}_{5}

16 100 Which sequence orders the elements by increasing atomic number? (a)

C < A < B

(b)

A < B < C

(c)

A < C < B

(d)

B < A < C