Question

question 7 (4 points)
draw the bohr model for magnesium on your own paper and then fill in the blanks using your periodic table and bohr model.
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: Element name

Magnesium is the element, so this is given by the question.
Element name: Magnesium

Step2: Atomic #

Atomic number of Magnesium is 12 (from periodic table).
Atomic #: 12

Step3: Atomic mass (rounded)

Atomic mass of Magnesium is approximately 24 (rounded from ~24.305).
Atomic mass (rounded): 24

Step4: # of protons

Protons = Atomic number, so 12.

of protons: 12

Step5: # of neutrons

Neutrons = Atomic mass - Atomic number = 24 - 12 = 12.

of neutrons: 12

Step6: # of electrons

In neutral atom, electrons = protons = 12.

of electrons: 12

Step7: # of energy levels (shells)

Magnesium has electron configuration 2, 8, 2, so 3 energy levels.

of energy levels (shells): 3

Step8: # of valence electrons

Valence electrons are in outermost shell, which is 2 for Magnesium.

of valence electrons: 2

Answer:

Blank 1: Magnesium
Blank 2: 12
Blank 3: 24
Blank 4: 12
Blank 5: 12
Blank 6: 12
Blank 7: 3
Blank 8: 2