Snapquiz - Electron Structure

Question 1. A lithium atom has a proton number of 3 and a mass number of 7. How many electrons does it have?

10.
3.
7.
4.

Question 2. A carbon atom has a mass number of 12 and a proton number of 6. How many electrons are in its outer shell?

4.
6.
2.
12.

Question 3. What is the maximum number of electrons which can fit in the first three orbits/shells respectively?

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

Question 4. A hydrogen atom has a mass number of 1 and a proton number of 1. How many electrons are in its outer shell?

2.
0.
1.
4.

Question 5. An oxygen atom has a atomic number of 8 and a mass number of 16. How many electrons are in its outer shell?

4.
6.
16.
8.

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