  CALCIUM SULFIDE
20*( 4.CLC + 4.SLF )
CLC: ••2 SLF:•• 2
Ø =3.94u Ø = 2.08u
CALCIUM SULFIDE, IS A MINERAL WITH,
A SOFT YELLOW-WHITE,CUBIC CRYSTAL
IT IS FOUND IN AUSTRALIA, TASMANIA
SOUTHERN ASIA AND NEW ZEALAND.
IT IS USED IN
HOSPITAL FABRICS
FIBERGLAS RESINS
POLYSEAMSEAL SEALANTS,
.
Density = 2.496 grams / cu'cm
Weight = 20(479.184) ugr
Weight = 9,583.680 ugr
Dissolves = 38°C
Hardness = 228 durons
Ø = The atoms diameter
1u =.000'000'1millimeters
1ugr = 10e-24 grams =1.66amu
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CALCIUM SULFIDE CaS ??
MINERALS, CONTAINING THE ALKALINE METALINES,
ARE ALMOST IMPOSSIBLE, TO MAKE LEED STUDYS OF,
BECAUSE,THE ELECTRONS, SEEM TO BE ATTRACTED,
ONLY TO THE ALKALINE METALINES, AS CHEM-DATA
DISCOVERED, WHEN STUDYING 20 EQUAL STUDYS,
OF CALCIUM MONO-SULFIDE, MADE BY IUPAC STAFF
AT CAMBRIDGE UNIVERSITY, IN THE 1950's.
USING DATA, FROM THE RECENTLY PUBLISHED,
TABLE OF THE SIZES OF THE ATOMIC ELEMENTS
THE CHEM-DATA TEAM, THEN DREW CIRCLES,
THE SIZE OF CO-VALENT BONDED, CALCIUM ATOMS,
AROUND ALL OF THE ELECTRON HITS, ON THE NUCLEI,
OF THE CALCIUM ATOMS, IN THE 20 IUPAC STUDYS,
THEY FOUND, THAT THE SPACES, BETWEEN THEM,
WERE,THE SIZE OF THE DIAMETER OF CO-VALENT
BONDED, SULFUR ATOMS, AS SHOWN RIGHT.
THEN,THEY ADDED,THE SMALLER, YELLOW CIRCLES,
BETWEEN,THE CALCIUM ATOM HITS, AS SHOWN RIGHT
AND THE FORM OF THE CUBIC CRYSTAL
THAT IS REFERRED TO IN CHEMISTRY BOOKS
BECAME MORE POSSIBLE TO COMPREHEND.
COMPUTERS, SOON CREATED AN EXACT REPLICA OF,
ONE SIDE OF A CUBIC CRYSTAL OF CALCIUM SULFIDE,
AS YOU SEE BELOW-RIGHT, AND A FEW DAYS LATER,
THE LARGE MODEL, ON THE LEFT, WAS COMPLETED,
SO THAT IUPAC COULD REVISE THE CaS FORMULA
TO REFLECT ITS NATURAL SHAPE,TO 80 (CaS)
AAGE BOHR, STUDIED THE BONDS, BETWEEN THE,
PAIRED CALCIUM ATOMS, NEXT TO THE CENTER LINES,
IN THE CUBIC CRYSTALS AND FOUND THEM ALL TO BE,
STILLED ORBITAL...SHARED CO-VALENT BONDS OF,
THE ELECTRONS. IN THE OUTER. "P" PERPENDICULAR,
ORBITALS, WHICH IS WHY CALCIUM SULFIDE IS CUBIC.
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 A LEED STUDY OF
A FROZEN CRYSTAL OF
CALCIUM "MONO"SULFIDE
 THE LEED STUDY WITH LARGE CIRCLES, DRAWN
AROUND THE HITS ON
EACH NUCLEUS OF THE
CALCIUM ATOMS AND
SMALLER ONES, PLACED
WHERE THE SULFUR ION
ATOMS, WERE DETERMINED
TO BE, BETWEEN THEM.
 THE SMALL CIRCLES SHOW
THE LOCATIONS OF THE
SULFUR ION-ATOMS
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