Exam01answers pg6 - For l = 2, m s =-2,-1,0,+1,+2. For l =...

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v = 1 . 23 × 10 3 m / s The mass of one He atom is mass He = 4 . 00 g / mol 6 . 022 × 10 23 atoms / mol = 6 . 64 × 10 - 24 g = 6 . 64 × 10 - 27 kg Using de Broglie’s relationship, λ = h p = h mv = 6 . 626 × 10 - 34 kg · m 2 / s (6 . 64 × 10 - 27 kg) (1230 m / s) = 8 . 11294 × 10 - 11 m 020 (part 1 of 1) 10 points In a single atom, what is the maximum num- ber of electrons possible in a fourth main en- ergy level ( n = 4) ? 1. 18 2. 50 3. 8 4. 72 5. 32 correct Explanation: l = n - 1. For n = 4, there are a maximum of 4 or- bitals (0, 1, 2, and 3). m s designates the orbital. For l = 0, m s = 0. For l = 1, m s = - 1,0,+1.
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Unformatted text preview: For l = 2, m s =-2,-1,0,+1,+2. For l = 3, m s =-3,-2,-1,0,+1,+2,+3. There are a total of 16 orbitals. Each or-bital can hold 2 electrons for a total of 32 electrons. 021 (part 1 of 1) 10 points Which color in the rainbow has the longest wavelength? 1. yellow 2. red correct 3. blue 4. green 5. orange Explanation: Ordered by wavelengths, blue < green < yellow < orange < red...
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This note was uploaded on 01/23/2011 for the course CH 301 taught by Professor Fakhreddine/lyon during the Spring '07 term at University of Texas at Austin.

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