$\Psi=\left[\mathrm{c} \phi_{1}-(1-\sqrt{3}) \phi_{2}\right]$ represents a normalized molecular orbital constructed from two different atomic orbitals $\phi_{1}$ and $\phi_{2}$ that form an orthonormal set. The value of $|\mathrm{c}|$ is ____ (up to two decimal places)
Answer
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