Question

Why does vibrational fundamental frequency decreases with the increase in masses of bonding atoms?explain with suitable examples

Accepted Answer

Why does vibrational fundamental frequency decreases with the increase
in masses of bonding atoms?explain with suitable example.

ANSWER:

The equation to determine the vibrational fundamental frequency

The reduced mass (μ) can be calculated like

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The increase in mass of bonding atoms (μ) leads to increasing of
reduced mass and fundamental vibrational frequency decreases so it is
inversely proportional to square root of reduced mass of atoms.

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EXAMPLE: 
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