Exam One Flashcards
Protons
Found in the nucleus
Neutrons
Found in the nucleus
Electrons
Orbit the nucleus
Atomic Number (Z)
Number of protons
Mass Number (A)
Protons + Neutrons or Atomic Number + Neutrons
Atomic number greater than 83
Radioactive
Grams to Mole
Divide by molar mass
Moles to Grams
Multiply by molar mass
Moles to Atoms
Multiply by Avagadros Number
Atoms to Moles
Divide by Avagadros Number
Principal Quantum Number (n)
Size
Angular Momentum Quantum Number (l)
Shape (n-1)
Magnetic Quantum Number (Ml)
Orientation -l 0 +l
Electron Spin (Ms)
Electron’s spin +1/2 or -1/2
Chromiums Electron Configuration
[AR]4s^13d^5
Coppers Electron Configuration
[AR]4s^13d^10
Effective Nuclear Charge (Zeff)
Increases from left to right, not much change from top to bottom
Atomic Radius
Decreases from left to right and increases from top to bottom
Ionization Energy
Increases from left to right and decreases from top to bottom
Electron Affinity (EA)
Increases from left to right and is the same from top to bottom
EA Exceptions
Nobles gases have a negative EA and 5A is less than 4A and 2A is less than 1A
Metallic Character
Increases from top to bottom
Ionic Radius
Decreases from left to right and Increases from top to bottom
Amount of Valence Electrons
Equal to the Group Number
