If the distance between the centres of the atoms of potassium and bromine in `KBr` (potassium-bromide) molecule is `0.282xx10^(-9)m`, find the centre of mass of this two particle system from potassium (mass of bromine `=80u`, and of potassium `=39u`)

Explanation

To find the center of mass of the potassium-bromine (KBr) molecule, we can use the formula for the center of mass of a two-particle system. The formula is given by:

\[ x_{cm} = \frac{m_1 x_1 + m_2 x_2}{m_1 + m_2} \]

Where:
- \( m_1 \) and \( m_2 \) are the masses of the two particles (potassium and bromine).
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