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

20.
48.
39.
19.


Question 2. A phosphorus atom has a mass number of 30 and a proton number of 15. How many electron shells does it have?

1.
3.
2.
4.


Question 3. A chlorine atom has a mass number of 35 and an atomic number of 17. How many electrons does it have?

35.
17.
52.
18.


Question 4. A calcium atom has an atomic number of 20 and a mass number of 40. How many electron shells does it have?

2.
4.
3.
1.


Question 5. What is the maximum number of electrons which can fit in the first three orbits/shells respectively?

8,8,8.
2,8,8.
2,4,8.
4,6,8.


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