Use the portion of the periodic table shown below to answer the questions. sodium
11
magnesium
12
Na
Mg
22.990
potassium
19
24.305
calcium
20
scandium
21
K
Ca Sc
39.098
rubidium
37
40.078
strontium
38
44.956
yttrium
39
Rb
SrY
85.468
87 62
88.906
Part 1: Name two elements that have the same properties as sodium (Na) (4 points)
Part 2: Determine the number of protons, electrons, and neutrons present in an atom of calcium (Ca). Explain how you determined your answer using
complete sentences. (6 points)