Chemistry

Problem

For a hydrogen-like ion with atomic number

Z

, the wave number

\bar{\nu}

of a spectral line arising from a transition

n_2 \to n_1

is given by ________. Choose the correct expression. a)

\bar{\nu}=Z R_H\Bigl(\dfrac{1}{n_1^{2}}-\dfrac{1}{n_2^{2}}\Bigr)

\bar{\nu}=Z^{2} R_H\Bigl(\dfrac{1}{n_1}-\dfrac{1}{n_2}\Bigr)

\bar{\nu}=Z^{2} R_H\Bigl(\dfrac{1}{n_1^{2}}-\dfrac{1}{n_2^{2}}\Bigr)

\bar{\nu}=Z^{2} R_H\Bigl(\dfrac{1}{n_2^{2}}-\dfrac{1}{n_1^{2}}\Bigr)