Your Name:
Date:
Class:
Atomic Structure
Formative Assessment
Instructions
Answer the following questions as review for your upcoming quiz on atomic structure.
- Fill in the following chart
about the isotopes of neon (Ne). Assume that the atoms have a
net charge of zero, that is, that they are neutral.
|
Name
|
Number of Protons
|
Number of Neutrons
|
Number of Electrons
|
Mass Number
|
Isotope Symbol
|
|
|
|
10
|
|
|
|
|
|
|
|
|
21
|
|
|
Neon-22
|
|
|
|
|
|
- What is an isotope?
- Define the terms cation and
anion.
- Two questions:
- What has to change for a
given atom for it to become a cation? Why?
- What has to change for a
given atom for it to become a anion? Why?
- Two questions:
- How do you calculate the
number of neutrons in an isotope given the name of
the element and the mass number?
- How do you calculate the
charge based on the number of protons and electrons
in an atom?
- Find the charge of an ion with the following numbers
of protons and electrons. Also, identify each element and
whether it is a cation or anion:
|
No. of Protons
|
No. of Electrons
|
Charge
|
Element Symbol with Charge
|
Cation or Anion?
|
|
17
|
18
|
|
Cl–
|
anion
|
|
5
|
2
|
|
|
|
|
9
|
10
|
|
|
|
|
16
|
18
|
|
|
|
|
14
|
10
|
|
|
|
|
30
|
28
|
|
|
|
- Bonus: How do you calculate the number of electrons
give the number of protons and the charge?