{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Exam01answers pg5 - We only consider ions that yield a...

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

View Full Document Right Arrow Icon
We only consider ions that yield a Noble gas configuration (Na + , Mg 2+ , O 2 - , N 3 - , and F - ). We are comparing ions with the same number of electrons: 10 total and 8 valence in this case. The number of protons in the ion is the biggest determinate of the size when electron number is constant. # e - val. inner prot. eff. charge N 3 - 10 8 2 7 +5 O 2 - 10 8 2 8 +6 F - 10 8 2 9 +7 Na + 10 8 2 11 +9 Mg 2+ 10 8 2 12 +10 The greater the effective nuclear charge, the stronger the attraction between the protons and the electrons, and thus the smaller the radii. 015 (part 1 of 1) 10 points Assume n 1 and n 2 are two adjacent energy levels of an atom. The emission of radiation with the longest wavelength would occur for which two values of n 1 and n 2 ? 1. 4,5 2. 5,6 3. 3,4 4. 7,8 correct 5. 2,3 6. 6,7 7. 1,2 Explanation: 016 (part 1 of 1) 8 points Particles of light are called photons and they have no mass and no charge. 1. False 2. True correct Explanation: 017 (part 1 of 1) 12 points Calculate the wavelength of radiation with a frequency of 4 . 9 × 10 14 per second. Correct answer: 6
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}