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Elements are made of atoms that contain electrons, neutrons and protons. Tiny electrons orbit a dense nucleus of protons and neutrons. Neon is an element found naturally in several different forms. These forms are known as isotopes and have differing numbers of neutrons, the uncharged particles found in the nucleus. The number of neutrons and the number of protons (positively charged particles) determine the element’s atomic mass. Three isotopes of neon are shown in Table 1.
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Question 1 of 5
1. Question
Question 1:
Which of the following correctly lists the isotopes of neon according to decreasing mass?
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Question 2 of 5
2. Question
Question 2:
Based on the table, a scientist isolating the components of a sample of atmospheric gas would most likely find which isotope of Neon?
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Question 3 of 5
3. Question
Question 3:
Based on Table 1, it can be inferred that a 19Ne isotope would have which of the following atomic masses?
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Question 4 of 5
4. Question
Question 4:
Based on the data provided, each neon neutron has which of the following masses?
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Question 5 of 5
5. Question
Question 5:
According to the passage, it may be inferred that electrons do not contribute to the element’s atomic mass because:
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