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Question 1 of 8
1. Question
1 point(s)Which statements about a sodium atom, ²³₁₁Na, are correct?
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Question 2 of 8
2. Question
1 point(s)Atoms contain electrons, neutrons and protons. What is the definition of nucleon number?
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Question 3 of 8
3. Question
1 point(s)The table shows information about atoms of three different elements.
Element Cl Cl K Proton number 17 17 19 Nucleon number 35 X 39 Number of protons 17 17 19 Number of neutrons W 19 20 Number of electrons 17 17 Y What are the values of W, X and Y?
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Question 4 of 8
4. Question
1 point(s)Which statement about atoms is correct?
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Question 5 of 8
5. Question
1 point(s)The diagram shows the atomic structure of an element X.
What is X?- 1.
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Question 6 of 8
6. Question
1 point(s)Which statements comparing the properties of electrons, neutrons and protons are correct?
Statements
- Neutrons and protons are both heavier than electrons
- Only electrons and neutrons are charged
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Question 7 of 8
7. Question
1 point(s)The diagram shows the structure of an atom of element X.
What is X?- 1.
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Question 8 of 8
8. Question
1 point(s)Element X is represented by ²⁷₁₃X. Which statement about element X is correct?
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