* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Quantum Numbers and Atomic Structure Honors
Survey
Document related concepts
Molecular orbital wikipedia , lookup
Reflection high-energy electron diffraction wikipedia , lookup
Metastable inner-shell molecular state wikipedia , lookup
Isotopic labeling wikipedia , lookup
Photoelectric effect wikipedia , lookup
X-ray fluorescence wikipedia , lookup
X-ray photoelectron spectroscopy wikipedia , lookup
Rutherford backscattering spectrometry wikipedia , lookup
Electron scattering wikipedia , lookup
Heat transfer physics wikipedia , lookup
Chemical bond wikipedia , lookup
Degenerate matter wikipedia , lookup
Auger electron spectroscopy wikipedia , lookup
Transcript
Quantum Numbers and Atomic Structure Honors Chemistry Please do not write on this exam 1. In an atom of argon-40, the number of protons A) B) C) D) equals the number of electrons equals the number of neutrons is less than the number of electrons is greater than the number of electrons 2. The total number of protons, electrons, and neutrons in each of four different atoms are shown in the table below. Which two atoms are isotopes of the same element? A) A and D B) A and Z C) X and D D) X and Z 3. Which two notations represent different isotopes of the same element? A) and B) and C) 4. The atomic mass of titanium is 47.88 atomic mass units. This atomic mass represents the A) total mass of all the protons and neutrons in an atom of Ti B) total mass of all the protons, neutrons, and electrons in an atom of Ti C) weighted average mass of the most abundant isotope of Ti D) weighted average mass of all the naturally occurring isotopes of Ti 5. The atomic mass of element A is 63.6 atomic mass units. The only naturally occurring isotopes of element A are A -63 and A-65. The percent abundances in a naturally occurring sample of element A are closest to A) B) C) D) 31% A-63 and 69% A-65 50% A-63 and 50% A-65 69% A-63 and 31% A-65 100% A-63 and 0% A-65 D) and and 6. An orbital is a region of space where there is a high probability of finding A) a proton C) a neutron B) a positron D) an electron 7. What is the total number of sublevels in the fourth principal energy level? A) 1 B) 2 C) 3 D) 4 8. A neutral atom in the ground state contains 16 electrons. What is the total number of electrons in the 2p sublevel? A) 6 B) 2 C) 8 D) 16 9. The greatest absorption of energy occurs as an electron moves from A) 1s to 3s C) 4d to 4s B) 3p to 3s D) 4s to 3p 10. Which electron configuration represents an atom of lithium in an excited state? A) 1s 12s 1 C) 1s 22s 1 Page 1 B) 1s 12s 2 D) 1s 22s 2 11. What is the maximum number of electrons that can occupy the 4d sublevel? A) 6 B) 2 C) 10 14. Which electron notation represents the valence electrons of a phosphorus atom in the ground state? D) 14 A) 12. What is the total number of valence electrons in an atom with the electron configuration 1s 22s 22p 63s 23p 3? A) 5 B) 11 C) 3 B) D) 15 13. An atom that has an electron configuration of 1s 22s 22p 63s 23p 63d 54s 2 is classified as A) B) C) D) an alkali metal an alkaline earth metal a transition element a noble gas element C) D) 15. In an atom of lithium in the ground state, what is the total number of orbitals that contain only 1 electron? A) 1 Page 2 B) 2 C) 3 D) 4 Answer Key Quantum Numbers and Atomic Structures 1. A 2. A 3. A 4. D 5. C 6. D 7. D 8. A 9. A 10. B 11. C 12. A 13. C 14. B 15. A Page 3