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- 1. Multiple ChoiceAn isotope is an atom of an element with different numbers of:electronsprotonsneutronspositrons
- 2. Multiple Choice
Look carefully at the diagram. The atoms that are isotopes of the same element are:A & DD & XX & YY & A - 3. Multiple Choice
The correct way of showing the isotope of nitrogen with 7 protons and 8 neutrons is:
⁸₇N
⁷₈N
157N
⁸₁₅N
- 4. Multiple ChoiceAn isotope of oxygen has 9 neutrons. The isotope is shown as X₈O. The number corresponding to X is38917
- 5. Multiple ChoiceAn isotope of sodium has 3 more neutrons than protons in its nucleus. The correct symbol for this isotope is¹¹₃Na³₁₁Na⁸₁₁Na²⁵₁₁Na
- 6. Multiple ChoiceHow many neutrons does the isotope of lithium have?8345
- 7. Multiple ChoiceHow many protons does this isotope of titanium have?48222670
- 8. Multiple ChoiceWhat do these isotopes of carbon all have in common?neutrons & mass numberatomic number and neutronsatomic number and electronsprotons, atomic number, and mass number
- 9. Multiple ChoiceIn a correctly written symbol what would be located in the "A" position?number of neutronsatomic numbernumber of electronsmass number
- 10. Multiple Choice
How many neutrons are in an atom of Carbon-14?
6
7
14
8
- 11. Multiple ChoiceWhat is the atomic number for an element with three protons?2136
- 12. Multiple ChoiceWhat is the number of protons that the element in this image contain?1471518
- 13. Multiple ChoiceWhat particle decides the identity of an atom/element?protonneutronelectronAll of the above.
- 14. Multiple Choicewhich atom has 4 neutrons?Li-6Li-7Li-8they have the same # of neutrons
- 15. Multiple Choice24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu.
What is the average mass of this element?74.92 amu24.97 amu75.01 amu74.51 amu - Answer choicesTagsAnswer choicesTags