Psi Ap Chemistry Periodic Trends Mc Review Periodic Law And The Quantum Model Worksheet Page 19
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27Use the PES spectra below to answer questions 19-21. The spectra represent elements
found in the same period on the periodic table.
19. Which of these two elements would have the smaller atomic radii?
(A) Spectrum 1
(B) Spectrum 2
(C) They are both the same
(D) There is not enough information
20. What are the identities of the elements represented by each spectrum respectively?
(A) Fluorine and nitrogen
(B) Carbon and beryllium
(C) Carbon and oxygen
(D) Sodium and carbon
(E) Fluorine and carbon
21. Which of the following is not true regarding the spectra above?
(A) The 2s peak at 1.72 in spectrum 1 has a lower binding energy that the 2s peak
at3.04 in spectrum 2 due to a decreased effective nuclear charge.
(B) There are 4 valence electrons represented in spectrum 1
(C) The valence electrons in spectrum 1 experience more shielding than those
represented in spectrum 2.
(D) The peak at 52.6 in spectrum 2 is held closer to the nucleus that the peak at 28.6 in
spectrum 1.
AP Chemistry
Periodic Trends
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