Chemistry - The Atom Flashcards
0
Q
Relative atomic mass
A
Mass of element compared with mass of carbon-12 atom
1
Q
Isotope
A
Element with same number protons different number neutrons
2
Q
Electron configuration
A
Arrangement of electrons in an atom. Energy of electrons are quantized
3
Q
Pauli’s Exclusion Principle
A
Electrons of opposite spin occupy the same orbital
4
Q
Hund’s Rule
A
Electrons enter orbitals singly before pairing up
5
Q
Valence electrons
A
Electrons on outer energy level
6
Q
Core electrons
A
Electrons in atom excluding valence electrons
7
Q
Valency
A
No valence electrons
