Question

there is a table (not one for dinner) thats probably the most famous table of science. (you can find it in your physical science book or on page 52 of this book.) if you learn how to read it, youll have quick access to important stuff about elements. its called the periodic table (because its written in rows, called periods). build your skill at reading the periodic table by finding the missing information in the samples below. you can get more practice with the periodic table on pages 11, 13, 14, and 15 of this book. remember: atomic mass = protons + neutrons atomic number = # protons # protons = # electrons 1. a. atomic number b. atomic mass 2. a. element name b. atomic number 3. a. # protons b. element symbol 4. a. atomic number b. element name 5. a. # electrons b. # protons c. atomic number d. name of element 6. a. atomic mass b. element symbol 7. a. element symbol b. # neutrons c. element name 8. a. atomic number b. # neutrons 9. a. element name b. # protons 10. a. # electrons b. atomic mass 11. a. atomic number b. # neutrons 12. a. atomic mass b. # neutrons name basic skills/physical science 6 - 8+ 12 copyright ©1997 by incentive publications, inc., nashville, tn.

Explanation:

Step1: Recall element - property relationships

We know that atomic number = number of protons = number of electrons, and atomic mass = protons + neutrons.

Step2: Solve for 1.a

For hydrogen (H), the atomic number is 1.

Step3: Solve for 1.b

The atomic mass of hydrogen is 1.

Step4: Solve for 2.a

The element name for Mg is Magnesium.

Step5: Solve for 2.b

The atomic number of magnesium is 12.

Step6: Solve for 3.a

For iron (Fe), the number of protons is 26 (since atomic number = number of protons and the atomic number of Fe is 26).

Step7: Solve for 3.b

The element symbol for iron is Fe.

Step8: Solve for 4.a

The atomic number of boron (B) is 5.

Step9: Solve for 4.b

The element name for B is Boron.

Step10: Solve for 5.a

For gold (Au), the number of electrons is 79 (since number of electrons = number of protons = atomic number and the atomic number of Au is 79).

Step11: Solve for 5.b

The number of protons of gold is 79.

Step12: Solve for 5.c

The atomic number of gold is 79.

Step13: Solve for 5.d

The name of the element is Gold.

Step14: Solve for 6.a

The atomic mass of nickel (Ni) is 59.

Step15: Solve for 6.b

The element symbol for nickel is Ni.

Step16: Solve for 7.a

The element symbol for sodium (Na) is Na.

Step17: Solve for 7.b

For sodium, atomic number = 11, atomic mass = 23. Number of neutrons=atomic mass - number of protons = 23 - 11=12.

Step18: Solve for 7.c

The element name for Na is Sodium.

Step19: Solve for 8.a

The atomic number of platinum (Pt) is 78.

Step20: Solve for 8.b

For platinum, atomic number = 78, atomic mass = 195. Number of neutrons = atomic mass - number of protons=195 - 78 = 117.

Step21: Solve for 9.a

The element name for Pb is Lead.

Step22: Solve for 9.b

The number of protons of lead is 82.

Step23: Solve for 10.a

For zirconium (Zr), the number of electrons is 40 (since number of electrons = number of protons = atomic number and the atomic number of Zr is 40).

Step24: Solve for 10.b

The atomic mass of zirconium is 91.

Step25: Solve for 11.a

The atomic number of radon (Ra) is 88.

Step26: Solve for 11.b

For radon, atomic number = 88, atomic mass = 226. Number of neutrons=atomic mass - number of protons = 226 - 88 = 138.

Step27: Solve for 12.a

The atomic mass of copper (Cu) is 64.

Step28: Solve for 12.b

For copper, atomic number = 29, atomic mass = 64. Number of neutrons=atomic mass - number of protons = 64 - 29 = 35.

Answer:

1. a. 1; b. 1
2. a. Magnesium; b. 12
3. a. 26; b. Fe
4. a. 5; b. Boron
5. a. 79; b. 79; c. 79; d. Gold
6. a. 59; b. Ni
7. a. Na; b. 12; c. Sodium
8. a. 78; b. 117
9. a. Lead; b. 82
10. a. 40; b. 91
11. a. 88; b. 138
12. a. 64; b. 35