solid state Flashcards
(51 cards)
_____ keep(s) molecular far
thermal e
nacl & quartz are _ solids
true
SiO2 on heating and cooling (rapidly) becomes _ and on crystallising becomes _
quartz glass, quartz
where is the valence e present in lattice of graphite
between diff layers
rank of bcc, ecc, fcc respectively
2, 2, 4
which of the 7 lattices have a=b=c?
cubic, rhombohedral/trigonal
which of the 7 lattices have all angles equal?
cubic, tetragonal, orthorhombic
which of the 7 lattices has neither any sides nor any angles equal?
triclinic
which of the 7 lattices has all sides unequal
monoclinic
all 7 lattices and the relationship between their sides and angles
.
CN of 3d structures formed using square layers
6
CN of hcp
12
no. of particles if no. of terahedral voids is 16
8
relationship between r and a for bcc, fcc and simple cubic
r=aroot3/4, aroot2/4, a/2
formula of density
M×Z/(Na×V)
PE of the 3 unit cells
simple 52%, fcc 74%, bcc 68%
types of stoichiometric defects and definitions
vacany, interstitial, schottky, frankel
rc<ra for which- schottky/frankel
frankel
metal excess and deficiency defects definition
.
colour of nacl without defect and with defect
white, yellow
colour of LiCl and KCl with defect
pink, purple
colour of LiCl and KCl with defect
pink, purple
which defect does AgBr show?
both schottky and frankel
why are solids rigit?
The constituent particles in solids have fixed positions and can oscillate about their mean positions.