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Advanced Practice in Atomic Structure and Energy Levels

This comprehensive practice guide covers various concepts in atomic structure and energy transitions. It includes problems related to mole calculations, case studies, and detailed analysis of atomic masses and isotopes. Key topics include ground state vs. excited state electrons, calculations of energy levels, and understanding atomic properties such as mass and neutron variations. This resource is essential for students looking to deepen their understanding of chemistry and physics phenomena surrounding atoms and energy.

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Advanced Practice in Atomic Structure and Energy Levels

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  1. Skills Practice Answers

  2. Skills Practice 1 • 9,434,880 mL • 17.8 cases • 0.333 pallet • a) 0.1560 m b) 4.1x1010 c) 92,000 μm d) 91,600 nm • a) 2.229x107 b) 8.07x106 c) 5.41x1020 d) 1.12x107 • a) 2.300021x1010 b) 3.51x10-9 • a) 235,400 b) 0.000000003400

  3. Skills Practice 2 • 325.2 • 18,000 • 0.0175 • 0.790 • 28,910,000 • 27 • 4.9x1012 • 1.86x105

  4. Skills Practice 8 • a) 21 b) Scandium (Sc) c) 22 • Atoms of the same element (having the same number of protons) with a different number of neutrons. • a) -2 b) sulfur c) 17 • 1;3 • +2 • 30 • B) ions • Strontium (Sr)

  5. Skills Practice 9 • a) 74.92 amu b) Arsenic (As) • a) 51.99 amu b) Chromium (Cr) • The most abundant is the one with a mass of 40.00 amu. • 41.996 amu

  6. Skills Practice 10 • Ground state: the normal energy level that an electron occupies. Excited state: when an electron has absorbed energy to occupy a higher energy level. • 7.11x10-8 m • 8.62x10-20 J • 3.68x10-19 J • a) 8.52x1014 Hz b) 5.65x10-19 J • f=7.68x1014 Hz wavelength= 3.91x10-7 m

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