2nd Atomic Theory Test Version A

16. Using the chart below, show where ALL of the electrons are located in ARSENIC. Use arrows torepresent electrons.7s6p5d6s4f5p5s4d4pIncreasing Energy4s3s3p3d2p2s1s

1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 5 3 2 1 +1/2Complete both charts.Element Atomic Electron configuration (circle last filled)#Fr47MagneticMomentQuantum Numbersn l m sElement Atomic#BrAtomicMass#protons#electronsLastFilledOrbitalK L M N O P Q s p d f12645p 5

Page 418. A radioactive isotope has a half-life of 2.60 years. If the initial mass is 75.0 mg, how much isleft after 10.4 years?19. A sample of Thorium-230 has an initial mass of 2.00 mg. What is the half-life of thissubstance if 0.0156 mg remain after 3.85 X 10 5 years?20. Complete the blanks in a & b and write correct nuclear equations for c & d.a. 198 Au 0 e + ______b. 261 Rf → α + ______ → 1 n + ______ → β + ______ → 1 H + ______ → α +______ → α + ______ → β + ______ → α + ______→ γ + ______→ α + 239 Amc. Americium-243 decays by emitting an alpha particle and another atom._________________________________________________d. Einsteinium-254 plus a proton results in the formation of another elementand the release of a neutron._________________________________________________21. Are the following quantum numbers possible? If no, explain why not.a. n = 1, l = 1, m = 0, s = +1/2 _______ ________________________________b. n = 4, l = 2, m = -3, s = -1/2 _______ ________________________________c. n = 8, l = 1, m = 0, s = +1/2 _______ ________________________________

Page 522. What is the electron configuration for Sulfur ion (S 2- )? ________________________What noble gas has the same configuration? _________________23. What is the electron configuration for Gallium ion (Ga 3+ )? _________________________What noble gas has the same configuration? __________________24. Periodic trends of electron configurations:a. What families last filled orbital is np 4 ? __________________________b. What is the last filled orbital for a transition metal? ________________c. What groups last filled orbital is ns 2 ? __________________________d. What is the last filled orbital for an inner transition metal? _____________________25. a. What is the closest noble gas to bromine? ______________________b. How many electrons does the bromine ion have? _______________c. How many protons does the bromine ion have? _________________d. What is the charge on the ion formed by bromine? ________________e. What is the electron configuration for the bromine ion? ________________________26. a. What color of light would you observe associated with a photon with the frequency,υ = 6.00 X 10 14 Hz.b. Calculate the energy associated with the photon in #26a.