Subatomic Particle Review

Subatomic Particles Review

Finding Protons and Electrons

  • Protons and Electrons in Neutral Atoms:
    Each neutral atom has an equal number of protons and electrons equal to their atomic number.

  1. Nickel (Ni):

    • Atomic Number: 28
    • Protons: 28
    • Electrons: 28

  2. Argon (Ar):

    • Atomic Number: 18
    • Protons: 18
    • Electrons: 18

  3. Iron (Fe):

    • Atomic Number: 26
    • Protons: 26
    • Electrons: 26

  4. Chlorine (Cl):

    • Atomic Number: 17
    • Protons: 17
    • Electrons: 17

  5. Sodium (Na):

    • Atomic Number: 11
    • Protons: 11
    • Electrons: 11

  6. Carbon (C):

    • Atomic Number: 6
    • Protons: 6
    • Electrons: 6

Calculate the Neutrons

  • Formula:
    Neutrons = Mass Number - Atomic Number

  1. Nitrogen:

    • Atomic Mass: 14.007
    • Atomic Number: 7
    • Neutrons: 14 - 7 = 7

  2. Aluminum:

    • Mass Number: 27 (assumed as actual value not provided)
    • Atomic Number: 13
    • Neutrons: 27 - 13 = 14

  3. Boron:

    • Atomic Mass: 10.81
    • Atomic Number: 5
    • Neutrons: 11 - 5 = 6 (assuming round off of mass number)

  4. Potassium:

    • Mass Number: 39 (assumed value)
    • Atomic Number: 19
    • Neutrons: 39 - 19 = 20

Summary of Key Terms

  • Atomic Number (Z):
    • Number of protons in the nucleus of an atom.
  • Mass Number (A):
    • Total number of protons and neutrons in the nucleus.
  • Neutrons:
    • Found by subtracting the atomic number from the mass number.

Example Template for Elements

  • Element Name:
    • Atomic Number: __
    • Mass Number: __
    • Number of Protons: __
    • Number of Neutrons: __
    • Number of Electrons: __