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- 1. Multiple Choice
What is the electron configuration for this atom?1s22s22p61s22s22p51s22s22p32s22p3 - 2. Multiple ChoiceWhat atom matches this electron configuration?
1s22s22p63s2NeonMagnesiumAluminumPotassium - 3. Multiple ChoiceWhat is the charge of an atom that has lost one electron?-1-2+1+2
- 4. Multiple ChoiceWhat is the charge of an atom that has gained one electron?-1-2+1+2
- 5. Multiple ChoiceWhat is the electronic configuration of sodium?1s22s22p63s1[Ne]3s11s22s22p7Both A and B are correct
- 6. Multiple ChoiceWhat is the electronic configuration of iron?
1s22s22p63s23p64s23d6
1s22s22p63s23p63d81s22p63s23p64s23d61s22s22p63s23p64s13d6 - 7. Multiple ChoiceWhich is the electron configuration for an oxygen atom?1s22s22p63s23p64s2
1s22s22p41s22s22p61s22s22p63s23p6 - 8. Multiple Choice
Sodium ionizes to form: Na+1.
How many electrons are in this cation?
10
11
22
23
- 9. Multiple Choice
Using the image, how many electrons are in an ion of cesium?
54
55
56
133
- 10. Multiple ChoiceWhat electron configuration matches an oxygen ion?1s22s22p63s2, 3p64s23d104p51s22s22p41s22s22p61s22s22p63s23p64s23d1
- 11. Multiple ChoiceThe electron configuration of an atom is 1s22s22p6. The number of valence electrons in the atom is36810
- 12. Multiple Choice
Which element ends 4p4?
sulfur
arsenic
selenium
antimony
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