Atomic radius Original Scenario-Based Practice

Questions

1. 1.

   An autonomous deep-space probe collects neutral, ground-state atoms of magnesium ($\text{Mg}$), silicon ($\text{Si}$), and chlorine ($\text{Cl}$) to calibrate its molecular filtration sieve. To adjust the sieve openings accurately, the automated navigation system must sort these three Period 3 elements according to their relative physical dimensions. Which of the following sequences correctly arranges these elements in order of decreasing atomic radius?

   • A) $\text{Cl} > \text{Si} > \text{Mg}$
   • B) $\text{Si} > \text{Mg} > \text{Cl}$
   • C) $\text{Mg} > \text{Si} > \text{Cl}$
   • D) $\text{Cl} > \text{Mg} > \text{Si}$

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