PHYS 3330 Module 1.2

Atoms

Recommended Reading

1.2: Atoms Download

By the end of this section, you will be able to:

Describe the basic structure of atoms and understand the symbols and terminology used in atomic and nuclear physics.

Practice!

Practice 1.2.1
An isotope of carbon has a mass number of 14 and a neutron number of 8. What is its atomic number?

Check your answer: A) 6

Practice 1.2.2
A certain radioisotope used in cancer treatment has 77 neutrons and an atomic mass of 137 u. Which of the following correctly identifies this isotope?

Check your answer: B) ¹³⁷Cs (Cesium-137)

Practice 1.2.3
Which of the following statements about the isotopes of hydrogen is correct?

Check your answer: C) Protium (ordinary hydrogen) has one proton and no neutrons, and is the most abundant isotope.

Practice 1.2.4
Which of the following statements accurately describes the extranuclear structure and chemical stability of carbon and neon atoms in their ground states?