TEST #3Ch 141 Name____________________________c = 3.00x108 m/sec h = 6 .626x10-34 J sec Planck's constantΔE = R(1/n12 - 1/n22) Energy differences for the hydrogen atomR = 2.18x10-18J Rydberg constant for hydrogenPart I Multiple Choice. Four points each. Be sure to answer every question, even if it is a guess.1. Which element of those below has 5 valence electrons?a. B b. Mn c. F d. P2. Which element properties most like those of arsenic (As)?a. Al b. P c. Se d. Ag3. T F Radio waves have a higher frequency than infrared light.4. Which set of four quantum numbers is possible for an electron on an atom?n l m sa. 2 1 -1 0b. 1 1 0 -1/2c. 5 1 2 1/2d. 4 2 -2 -1/25. Which element of those below will have the highest ionization potential?a. Sc c. Brb. La d. At6. Which element of those below is diamagnetic?a. N b. S c. Kr d. Zr7. Which drawing represents a Lewis structure in which sulfur has a +1 formal charge?1a. S c. Sb. S d. S 8. How many bonds does silicon want to form?a. 1 b. 2 c. 3 d. 49. What is the hybridization of the molecule AlBr3?a. sp b. sp2c. sp3d. sp3d10. Which bond of those below is the least polar?a. Se-Cl b. S-F c. B-H d. P-O11. Which is the following is NOT true about σ- (sigma) bonds? a. They are stronger that π-bonds.b. They involve overlap of p-orbitals.c. They are on a line between the bonded atoms.d. They are the kind of bond when there is a single bond between the atoms.12. Match the melting point with the metal in the list below.Pd ____ a. 321 oCRu ____ b. 1552 oCCd ____ c. 2250 oCMo ____ d. 2617 oC13. How many electrons have the quantum # m = 2 on an atom of Tecnetium (Tc)? (ex. cr.)a. 3 b. 6 c. 2 d. 15 e. 1214. Which MO drawing can be used to represent an n-type semiconductor?a. b. c. d.2Part II Short Answer. Four points each mostly.15. State the Pauli Exclusion Principle.16. Which element has as its electron configuration [Kr]5s2? ___________________________17. Draw the orbital diagram for the element vanadium (V).18. Draw an appropriate molecular orbital picture for the diatomic molecule NO-. Is it diamagnetic or paramagnetic? What is its bond order? (5 pts)19. What is the electron configuration of the ion Se-2?20. Describe and explain the change in atomic size as one goes across a row in the periodic chart. 321. Describe the difference between classical mechanics and quantum mechanics. (a rather open-ended question)22. a. For the molecule IF4- , what are its shape and hybridization? Draw the molecule. (5 pts) b. For the same molecule, is it polar or non-polar? Justify your answer. (3 pts) c. Draw an orbital diagram representing this molecule with the correct hybridized orbitals. (ex cr.)23. a. Draw a Lewis structure for the ion CO3 2-. (3 pts)4b. Draw all reasonable resonance structures for this ion. Are they equivalent or non-equivalent resonance structures? (4 pts)24. For the molecule belowa. how many π-bonds and how many σ-bonds does it have? (2 pts each)# π-bonds _______# σ-bonds _______b. What are the shape and hybridization of the nitrogen atom? (3 pts)25. For the ion C3 H5- a. Draw the ion with the correct shape.b. Ex cr. The molecule exhibits resonance. Looking just at the carbon atoms, draw the three molecular orbitals which can explain resonance in this molecule. Label them as bonding, non-bonding or antibonding orbitals.526. How does molecular orbital theory explain the difference between a conductor, a non- conductor and a semi-conductor. Making drawings would be very helpful. (5 pts)Part III Solved problems. Show all your work for full credit.27. Calculate the energy and the frequency for emission of light in the third line in the Lyman series for hydrogen. (7 pts)628. a. If a photon of light of wavelength 124 nm was absorbed by an atom whose ionization Energy is 340 KJ/mole, what would be the speed of the emitted electron? (assume conservation of energy. The mass of an electron is 9.11x10-31 kg) (6 pts)29. Which has more energy, a photon with a wavelength of .24 nm or an electron with a wavelength of 0.24 nm (use KE = ½ mv2 and me = 9.11x10-31 kg) (ex