The mass of the cesium atom is 133 u and that of the chlorine atom is 35.5 u.The reduced mass of CsCl is approximately
A)28.0 u
B)169 u
C)97.5 u
D)84.3 u
E)63.7 u

Question

Quizplus · Accepted Answer

The reduced mass ($\mu$) of a two-particle system is given by the formula $\mu = \frac{m_1m_2}{m_1 + m_2}$, where $m_1$ and $m_2$ are the masses of the two particles. For CsCl, $m_1 = 133u$ (cesium) and $m_2 = 35.5u$ (chlorine). Plugging these values into the formula gives $\mu \approx 28.0u$.

The Mass of the Cesium Atom Is 133 U and That