Question

25
mn

54.938
atomic # =
atomic mass =

of protons =

of neutrons =

of electrons =

9

fluorine
18.998
atomic # =
atomic mass =

of protons =

of neutrons =

of electrons =

16
s

atomic # =
atomic mass =

of protons =

of neutrons =

Explanation:

For Manganese (Mn):

Step1: Atomic Number

The atomic number is the top number on the element tile, so for Mn, Atomic \# = 25.

Step2: Atomic Mass

The atomic mass is the bottom number, so Atomic Mass = 54.938.

Step3: Number of Protons

Protons = Atomic Number, so \# of Protons = 25.

Step4: Number of Neutrons

Neutrons = Atomic Mass (rounded) - Atomic Number. Rounded atomic mass of Mn is 55, so Neutrons = 55 - 25 = 30.

Step5: Number of Electrons

Electrons = Protons (in neutral atom), so \# of Electrons = 25.

For Fluorine (F):

Step1: Atomic Number

Atomic \# = 9 (top number).

Step2: Atomic Mass

Atomic Mass = 18.998 (bottom number).

Step3: Number of Protons

\# of Protons = 9 (same as atomic number).

Step4: Number of Neutrons

Rounded atomic mass is 19, so Neutrons = 19 - 9 = 10.

Step5: Number of Electrons

\# of Electrons = 9 (neutral atom).

For Sulfur (S):

Step1: Atomic Number

Atomic \# = 16 (top number).

Step2: Atomic Mass

We know sulfur's atomic mass is approximately 32.06 (commonly, or from the tile's blank, but using known value).

Step3: Number of Protons

\# of Protons = 16 (atomic number).

Step4: Number of Neutrons

Neutrons = 32 - 16 = 16 (using rounded atomic mass 32).

Answer:

s (filled for each element):

Manganese (Mn):

Atomic \# = 25
Atomic Mass = 54.938
\# of Protons = 25
\# of Neutrons = 30
\# of Electrons = 25

Fluorine (F):

Atomic \# = 9
Atomic Mass = 18.998
\# of Protons = 9
\# of Neutrons = 10
\# of Electrons = 9

Sulfur (S):

Atomic \# = 16
Atomic Mass = 32.06 (or as per tile's blank, but standard is ~32.06)
\# of Protons = 16
\# of Neutrons = 16 (using atomic mass 32)
\# of Electrons = 16 (neutral atom)

(Note: For sulfur's atomic mass, if using the tile's blank, we can also calculate from neutrons, but standard atomic mass is 32.06. The blank for sulfur's atomic mass (bottom) would be ~32.06, and neutrons = 32 - 16 = 16.)