Question

No.10 , write the steps clearly

series limits (the smallest angle of the series) is 15.0degree. Find the wavelength and photon energy that corresponds with this angle. The energy of the photon in part e) is the maximum energy that can be emitted in this line series. (This corresponds to a transition from an upper value of n = infinity.) What is the lower value of n tor this series? p pis] What transitions do each of the three lines correspond to? (Give the initial and lmal values ot n for each of the 3 lines in the table above.) What is the name of this series? Potassium 40, 40 19 K, is a radioactive element with a half life of 1.248 times 109 years. Curiously, a nucleus of Potassium 40 has 2 different ways it can decay....the first is to Calcium 40, and the other decay is to Argon 40. (Calcium is element number 20, and Argon is element number 18.) For a given sample ot Potassium 40, 89.1% of the decays are to Calcium 40, and 10.9% of the decays are to Argon 40. Write the complete decay reaction of Potassium 40 to Calcium 40. (Be sure to write the numbers in the usual positions for each nuclei, and also be sure to include all particles involved in the decay.) Write the complete decay reaction of Potassium 40 to Argon 40. (Be sure to write the numbers in the usual positions for each nuclei, and also be sure to include all particles involved in the decay.) Potassium and Calcium are both naturally present in rocks, however, Argon does not naturally occur in rocks. So, the Potassium-Argon decay reaction can be used to determine the age of rock samples. (For example, the Potassium-Argon dating method is the primary way the 'geomagnetic polarity time scale' (time scale for the polar shifts) is determined for planet Earth.) Let's say you have a rock sample and are able to measure the current number of Potassium 40 nuclei per gram to be 5482. You also measure the current number of Argon 40 nuclei per gram to be 73 for the rock sample. Based on these values and the information given in the first & paragraph of the problem, calculate the age of the rock.

Answer 1