Select the pair of nuclei that are isobars.

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

Problem

Select the pair of nuclei that are isobars. (a)

_{20}^{40}\text{Ca} \; \text{and} \; _{20}^{42}\text{Ca}

(b)

_{15}^{31}\text{P} \; \text{and} \; _{14}^{31}\text{Si}

(c)

_{6}^{14}\text{C} \; \text{and} \; _{8}^{16}\text{O}

(d)

_{13}^{27}\text{Al} \; \text{and} \; _{13}^{27}\text{Al}