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Exam (elaborations)

The document consist of 7 exercises in Chemical biology Chapter 1: Structure and Bonding

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2020/2021 Written for academic year
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_AQA BIOLOGY
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TCHEMBIO 1 (TCHEMBIO1)
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Exercise 1: Give the number of protons, neutrons, and electrons of the following: 178O, 19980Hg,6329Cu,4820Ca, and 19729Au. Exercise 2: Calculate the average atomic weight of the following: 1.) 185Re (37.40%) and 187Re (62.60%) 2.)6Li (7.42%) and 7Li (92.58%). Exercise 3: Give the Electron configuration of the following atom: 4Be, 11Na, 16S, 20Ca, 35Br. Exercise 4: Predicting the bonds formed by an atom. Q1-How many hydrogen atoms does phosphorus bond to in forming phosphine, pH?? Exercise 5: Drawing Electron-Dot and Line-bond structures. Exercise 6: Drawing Electron-Dot and Line-bond structure Exercise 7: Interpret the line-bond structure and give its molecular formula.

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  • chemical biology 1
  • electron dot
  • line bond
  • molecular formula
  • electron configuration
  • chapter 1 structure and bonding
  • calculate average atomic weight

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