Question

Quiz #1A Name Good Luck 1. What term is used to describe atoms of the same element that have different A. radioactive B. constituents C_isotopes D. telomers E. isomers 2. What is always true for a neutral atom? 5 pts masses? 5 pts A. There is an equal number of protons and neutroes. C. There is an equal number of protons, neutrons, and electrons. D. The namber of protons B_There is an equal number of prosons and clectrons E. The number of protons, neutrons, and electrons is an even number and neutrons is an even number 3. The ion K' is formed by which process? 5 pts A. loss of an electron by K B. gain of a proton by C. loss of a proton by K D. gain of an electron by K 4. What is the general name given to the elements of Group LA (1)? 5pts A. halogens B. alkali metalsC. alkaline carth metals D. noble gases E. metalloids 5. What are valence electrons? 5 pts A. the electrons located in the nucleus of an atom C. the outermost electrons in an atom E. the total number of electrons in an atom B. the interior electrons, located closest to the nucleus D. the electroms with the lowest energy in an atom 6. Which ion is NOT isoelectronie (ue eleron configuaion) wih Ar? The electron confguration of Ar is shown. 5 pts A. CI D. CaES B. K C. Br 7. . The ground state elegtron coefiguration of a sulfur atom is shown below. What is the ground state electron configuration of the ion S7 5 ps 8. Which onc of the following electron configurations is appropriate for a ground state atom? 5 pts A, 1#2s' B.ir2s' C.is22s22p" 9 An unknown Element has two naturally occurring isotopes. One of these has a mass of 6.0i5I anmu and a natural abundance of 749%. A second isotope has a mass of701 60 ama and a natural abundance of 92.519. Calculate the atomic mass of the unknown Element. 10 pts B. 69410 C.92.615 D. 54.321 E. 6.941 A. 9.261 10. For each of the elements Na, Ni, Al, P, Cl, and Ar, provide the following information: 3 pts a. Which are metals? b. Which are representative metals? Which are inert or noble gases? Provide the answer to the following problem using scientific notation and the proper mumber of significa (6.00×10-2)(3.00×104)-? 6pes A. 1.8×105 D. 18.00 x 104 E. 2 x 10 C. 1.30×10- B. 1.80x105

Answer 1

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