Atoms, Elements and Compounds

The following Bohr model diagrams describe the number of electrons in different electron shells.

Which of the four models is incorrect?
1. Model B
2. Model A
3. Model C
4. Model D
How many electrons in total can the first two electron shells hold?
1. 10 electrons
2. 8 electrons
3. 6 electrons
4. 12 electrons
The electrons in the outermost shell are known as
1. valence electrons.
2. shell electrons.
3. orbital electrons.
4. Bohr electrons.
Why are Noble gases very unreactive?
1. Their outermost electron shell is filled
2. They have only 1 electron in their outermost electron shell
3. They have no atoms in their outermost electron shell
4. Noble gases have no electron shells
What does period number indicate about the electron structure of an atom?
1. The period number indicates the number of shells that have electrons
2. The period number indicates the total number of electrons
3. The period number indicates the number of electrons in the innermost shell
4. The period number indicates the number of electrons in the outermost shell
The following diagram represents an electron shell diagram for phosphorus.

Which of the following correctly describes how many electrons are in each of the different shells of phosphorus?
1. 2, 8, 5
2. 6, 6, 3
3. 3, 6, 6
4. 2, 5, 8
In regard to electron shell structure, what do the members of a periodic table family have in common?
1. They have the same number of valence electrons
2. They have the same number of electrons
3. They have the same number of electron shells
4. They have all their electrons in the same electron shell
What do non-metal atoms do in order to gain noble-gas stability?
1. They gain electrons
2. They lose electrons
3. They move electrons into the nucleus
4. They make their electrons larger
An aluminum ion has 10 electrons and 13 protons. What is the charge of an aluminum ion?
1. 3+
2. 3-
3. 23+
4. 13-
What do metal atoms do to form ions?
1. They lose electrons
2. They gain electrons
3. They move electrons into the nucleus
4. They make their electrons larger

Atoms, Elements and Compounds - Section 2.3 Quiz