You have three metal samples—A, B, and C—that aretantalum (Ta), barium (Ba), and tungsten (W), but you don’tknow which is which. Metal A emits electrons in response to vis-ible light; metals B and C require UV light. (a) Identify metal A,and find the longest wavelength that removes an electron. (b)What range of wavelengths would distinguish B and C? [Thework functions are Ta (6.81x10^-19J), Ba (4.30x10^-19J), andW (7.16x10^-19J)

Please don't provide handwritten solution ...    An electron in the n = 4 level of an H atom emits a photon of wavelength 97 nm. To what energy level does the electron move?

w Policies urrent Attempt in Progress The dissociation energy of a molecule is the energy required to break apart the molecule into its separate atoms. The dissociation energy for a particular molecule is 1.05 × 10-18 J. Suppose that this energy is provided by a single photon. Determine the (a) wavelength and (b) frequency of the photon. (c) In what region of the electromagnetic spectrum (see Figure 24.9) does this photon lie? (a) Number i (b) Number i (c) eTextbook and Media Save for Later AR Units Units LDL > Attempts: unlimited Submit Answer

The characteristic K, and K, lines for chromium have wavelengths of 0.229 nm and 0.208 nm, respectively. What is the ratio of the energy difference between the levels in chromium involved in the production of these two lines? ΔΕ. ΔΕ AE