HW2answers pg4 - a value of −2, so could not be 0 nor 1;...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: a value of −2, so could not be 0 nor 1; it must be 2, which corresponds to the d-orbitals. 010 (part 1 of 1) 10 points How many electrons are in the third principal level (n = 3) of a chromium (Cr) atom? 1. 13 correct shells. 012 (part 2 of 2) 10 points How many total orbitals are there in the shell with n = 3? 1. 25 2. 16 2. 8 3. 49 3. 24 4. 9 correct 4. 4 5. None of these 5. 6 6. 36 6. 12 7. 2 Explanation: There are 2 electrons in the 3s orbital, 6 electrons in the 3p orbitals and 5 electrons in the 3d orbitals. Remember that Cr is an exception. One electron from the 4s orbital gets elevated to a 3d orbital giving it a half filled 3d orbital. 011 (part 1 of 2) 10 points What subshells correspond to the principal quantum number n = 3? 1. 3 s, 3 p, 3 d, 3 f, 3 g, 3 h, 3 i 2. 3 s, 3 p, 3 d, 3 f 3. None of these 4. 3 s, 3 p, 3 d correct 5. 3 s, 3 p 6. 3 s, 3 p, 3 d, 3 f, 3 g 7. 3 s, 3 p, 3 d, 3 f, 3 g, 3 h Explanation: For n = 3, = 0, 1, 2, so there are 3 subExplanation: 1 + 3 + 5 = 9 (= 32 ) 013 (part 1 of 4) 10 points How many values of the quantum number are possible when n = 3? 1. 6 2. 3 correct 3. 7 4. 5 5. 4 Explanation: 3 values: 0, 1, 2 014 (part 2 of 4) 10 points How many values of m are allowed for an electron in a 5 f subshell? 1. 4 2. 7 correct 3. 5 4. 3 ...
View Full Document

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.

Ask a homework question - tutors are online