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Calculate the frequency of the light emitted by a photon with a wavelength of 538.2 nm.
Q14: Draw the Lewis structure for SO<sub>4</sub><sup>2</sup>⁻.How many
Q16: Which of the following transitions represent the
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Q184: Which of the compounds C<sub>3</sub>H<sub>8</sub>,Mg Cl<sub>2</sub>,Zn(NO<sub>3</sub>)<sub>2</sub>,O Cl<sub>2</sub>