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+//Chapter 2: Spectroscopy and Photochemistry
+//Problem: 3
+clc;
+
+//Declaration of Constants
+Na = 6.022 * 10 ** 23       // Mole constant,permol
+
+//Declaration of Variables
+d_NaCl = 2.36 * 10 ** -10           // Intermolecular dist. NaCl,in m
+m_Cl = 35 * 10 ** -3                // Atomic mass, in kg /mol
+m_Na = 23 * 10 ** -3                // Atomic mass, in kg /mol
+
+// Solution
+mu = m_Na * m_Cl / ((m_Na + m_Cl) * 10 ** -3 * Na) * 10 ** -3
+
+I = mu * d_NaCl ** 2
+
+mprintf("The reduced mass of NaCl is %.3e kg\n",mu)
+mprintf(" The moment of inertia of NaCl is %.3e kg m square",I)