Question

question 4 (4 points) use the following bohr model and your periodic table to fill in the blanks: element name: ______ atomic #: ____ atomic mass (rounded): ____ # of protons: ____ # of neutrons: ____ #of electrons: ____ # of energy levels (shells): ____ # of valence electrons: ______ blank 1: blank 2: blank 3: blank 4: blank 5: blank 6: blank 7: blank 8:

Explanation:

Step1: Determine Element Name

The number of protons ($p^+$) is 6. From the periodic table, the element with 6 protons is Carbon.

Step2: Atomic Number

Atomic number is equal to the number of protons. So atomic number = 6.

Step3: Atomic Mass

Atomic mass is the sum of protons and neutrons. Protons = 6, Neutrons ($n^0$) = 6. So atomic mass = 6 + 6 = 12 (rounded).

Step4: Number of Protons

Given $6\ p^+$, so number of protons = 6.

Step5: Number of Neutrons

Given $6\ n^0$, so number of neutrons = 6.

Step6: Number of Electrons

In a neutral atom, number of electrons = number of protons. So electrons = 6.

Step7: Number of Energy Levels

From the Bohr model, there are 2 energy levels (shells: inner and outer).

Step8: Number of Valence Electrons

Valence electrons are in the outermost shell. The outer shell has 4 electrons (from the Bohr model diagram: outer shell has 4 electrons).

Answer:

Blank 1: Carbon
Blank 2: 6
Blank 3: 12
Blank 4: 6
Blank 5: 6
Blank 6: 6
Blank 7: 2
Blank 8: 4