What is the difference between atoms that have different atomic numbers?

Worksheet – Chapter 2

Name _____________________________________

1. What is the difference between atoms that have different atomic numbers?

2. For each of the three fundamental particles in atoms:

a. Name each one and denote the charge

b. Which particle has the most mass, and which the least?

c. Which 2 particles are closest in mass value?

3. Which atomic electron shell will:

a. Hold the least number of electrons?

b. Has the greatest binding energy? 

c. Hold no more than 18 electrons?

4. What is the difference between the atomic number and the atomic mass number?

5. What two things affect the amount of electron binding energy for an electron shell?

6. What do all of the elements along a period or horizontal row in the periodic table have in common?

7. What do all of the elements along the far right hand column or group have in common?  What is special about this group?

8. Classify the following atoms as Isotope, isotone, isobar, or isomer:

a. 58mCo and 58Co

b. 56138 Ba and   58140Ce

c. 23He and 24He

d. 1740 Cl  and  1940 K

9. Can you think of an example (not the one in the text) of two elements that would likely bond with ionic bonding?  

Why do you think these elements would be likely to bond in this way?

10. (From Chapter 1) –  What is the purpose of each of these components of an x-ray room?

a. Tube head assembly 

b. Collimator box, mirror, Cross-hairs, and shutters

c. Table bucky assembly

d. Wall bucky

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