Snapquiz - Electron Structure

This is the Snapquiz on Electron Structure. Click here or use the embedded video if you haven't watched the lesson yet.


Question 1. A carbon atom has a mass number of 12 and a proton number of 6. How many electrons are in its outer shell?

12.
2.
6.
4.


Question 2. An oxygen atom has a atomic number of 8 and a mass number of 16. How many electrons are in its outer shell?

8.
4.
16.
6.


Question 3. A potassium atom has a mass number of 39 and an atomic number of 19. How many electrons does it have?

19.
48.
20.
39.


Question 4. A phosphorus atom has a mass number of 30 and a proton number of 15. How many electron shells does it have?

1.
4.
3.
2.


Question 5. A lithium atom has a proton number of 3 and a mass number of 7. How many electrons does it have?

10.
3.
4.
7.


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