Atomic Structure Flashcards
1
Q
Discovery of electrons and plum pudding model
A
JJ Thompson
2
Q
Arrangement of electrons
A
Bohr
3
Q
Atoms as the smallest building block of matter
A
Ancient greeks and dalton
4
Q
Discovery of nucleus
A
Rutherford
5
Q
Discovery of neutron
A
Chadwick
6
Q
Nuclear notation
A
Mass number on top, atomic on bottom
7
Q
Valence electrons
A
Electrons that occur in the outermost energy level. Can participate in formation of chemical bonds
8
Q
Hund’s rule
A
Every orbital in a sublevel is singly occupied before being doubly occupied
9
Q
Pauli’s Exclusion Principle
A
Orbitals can accommodate max of 2 electrons provided they spin opposite direction
10
Q
Why do isotopes have have the same chemical properties
A
same no of electrons and valence electrons
11
Q
Atomic orbital
A
Region in which an electron may be found around a single atom
