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

10.
7.
4.
3.


Question 2. A calcium atom has an atomic number of 20 and a mass number of 40. How many electron shells does it have?

3.
4.
2.
1.


Question 3. An oxygen atom has a atomic number of 8 and a mass number of 16. How many electrons are in its outer shell?

6.
16.
8.
4.


Question 4. A carbon atom has a mass number of 12 and a proton number of 6. How many electrons are in its outer shell?

4.
2.
12.
6.


Question 5. A hydrogen atom has a mass number of 1 and a proton number of 1. How many electrons are in its outer shell?

1.
2.
4.
0.


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