Atoms Quiz_do - From null ...

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Started: Submitted: Score: Points: Points: 10 out of 10 Points: 10 out of 10 Points: 10 out of 10 From: null <Saved by Internet Explorer 11> Date: Wed, 16 Sep 2015 09 49 41 -0500 To: CC: Subject:Atoms Quiz Atoms Quiz Attempt 1 of 2 08/24/2015 12:39 AM EDT 08/24/2015 1:03 AM EDT 90% 90 out of 100 Question 1 Two atoms that have the same number of protons but different numbers of neutrons are called... A. ions B. isomers C. isotopes Feedback Correct. Isotopes have the same atomic number but different atomic mass. Question 2 Fluorine, F, has an atomic number of 9 and an approximate atomic mass of 19. How many electrons does a fluorine atom have? A. 10 B. 19 C. 28 D. 9 Feedback Correct! For an electrically neutral atom, the number of protons = the number of electrons Question 3 Gold is abbreviated Au in the periodic table.
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Points: 10 out of 10 Points: 10 out of 10 Points: 10 out of 10 What is the atomic mass of gold? A. 79 B. 197 C. 118 D. 276 Feedback Correct. The atomic mass is written below the element abbreviation on the periodic table.
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