Ionic radius Original Scenario-Based Practice

Questions

1. 1.

   In an orbital research station studying exoplanetary atmospheres, an automated electrostatic sieve sorts recovered ionic particles through microscopic aperture gates calibrated strictly by ionic radius. The sensor chamber isolates four isoelectronic ions—$\mathrm{N}^{3-}$, $\mathrm{O}^{2-}$, $\mathrm{F}^{-}$, and $\mathrm{Na}^{+}$—each possessing exactly ten electrons. To ensure the particles pass smoothly from the narrowest gate to the widest gate, the navigation computer must establish the correct sequence of increasing ionic radius. Which arrangement correctly ranks these ions from smallest to largest ionic radius?

   • A) $\mathrm{N}^{3-} < \mathrm{O}^{2-} < \mathrm{F}^{-} < \mathrm{Na}^{+}$
   • B) $\mathrm{Na}^{+} < \mathrm{F}^{-} < \mathrm{O}^{2-} < \mathrm{N}^{3-}$
   • C) $\mathrm{F}^{-} < \mathrm{O}^{2-} < \mathrm{N}^{3-} < \mathrm{Na}^{+}$
   • D) $\mathrm{Na}^{+} < \mathrm{O}^{2-} < \mathrm{F}^{-} < \mathrm{N}^{3-}$

Answers and step-by-step solutions appear after you finish the test.