January 2016 Chemistry Regents #66-68

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Question 51-53 Questions 54-56
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  Base your answers to questions 66 through 68 on the information below.

Elements with an atomic number greater than 92 can be artificially produced in nuclear reactions by bombarding a naturally occurring nuclide with a different nuclide. One of these elements is roentgenium, Rg. The equation below represents a nuclear reaction that produces Rg-272.

66 State the location and the total charge of the protons in a Ni-64 atom. [1]

Answer==>Location=  nucleus;  Total charge=   28+

67 Determine the number of neutrons in an atom of Rg-272. [1]

Answer==>161

68 Based on the Periodic Table, classify the element produced by this nuclear reaction as a metal, metalloid, nonmetal, or noble gas. [1]

Answer==>    metal

on to Questions 69-72

 

 
 

Questions 1-5 Questions 6-10 Questions 11-15 Questions 16-20 Questions 21-25 Questions 26-30 Questions 31-35 Questions 36-40 Questions 41-45 Questions 46-50

Question 51-53 Questions 54-56
 Questions 57-61 Questions 62-65 Questions 66-68 Questions 69-72  Questions 73-75  Questions 76-78  Questions 79-82 Questions 83-85

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