chapter 16 Flashcards
1
Q
ionic
A
metal + nonmetal
2
Q
crystaline solid
A
molecular, has a structure
3
Q
amorphous solid
A
molecular, no structure
4
Q
polycrystaline
A
molecular, has both structure and no structure
5
Q
allotropes
A
alternate forms of the same element in a different structure
6
Q
metallic solids
A
consists of cations held together in a sea of electrons
7
Q
how many atoms in primitive cubic?
A
1 atom
8
Q
how many atoms body centered cubic?
A
2 atoms
9
Q
how many atoms in face centered cubic?
A
4 atoms
10
Q
fraction of atom in corner
A
1/8
11
Q
fraction of atom on face
A
1/2
12
Q
primitive atomic radius formula
A
r = a/2
13
Q
bcc atomic radius formula
A
r = sqrt(2)a/4
14
Q
fcc atomic radius formula
A
r = sqrt(3)a/4
15
Q
hexagonal closed packed structure (hcp)
A
coordination number 12
