actinium

1. A radioactive element found in uranium ores, used in equilibrium with its decay products as a source of alpha rays. Its longest lived isotope is Ac 227 with a half-life of 21.6 years. Atomic number 89; melting point 1,050°C; boiling point (estimated) 3,200°C; specific gravity (calculated) 10.07; valence 3. See Table at element.

2. A radioactive trivalent metallic element that resembles lanthanum in chemical properties and that is found especially in pitchblende .

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Top Words by points	Points	Word Game
actinium	12	Scrabble

2 Letters	Scrabble® Points
ta	2
it	2
in	2
ma	4
mi	4
mu	4
ai	2
na	2
nu	2
ti	2
um	4
am	4
an	2
at	2
ut	2
un	2

3 Letters	Scrabble® Points
mun	5
tui	3
tin	3
tic	5
uta	3
uni	3
mac	7
man	5
mat	5
mic	7
tam	5
tau	3
tan	3
tum	5
nam	5
nim	5
nit	3
nut	3
mut	5
tun	3
act	5
aim	5
ant	3
ani	3
amu	5
ain	3
ait	3
cut	5
cum	7
cat	5
can	5
ami	5
cam	7

4 Letters	Scrabble® Points
unai	4
muni	6
tuna	4
tian	4
tain	4
aunt	4
anti	4
amin	6
main	6
inti	4
inia	4
unit	4
cant	6
cami	8
cain	6
unci	6
maun	6
maut	6
mica	8
mina	6
mini	6
mint	6

5 Letters	Scrabble® Points
tunic	7
umiac	9
uncia	7
unica	7
actin	7
amici	9
amnic	9
animi	7
antic	7
acini	7
cutin	7
cunit	7
cumin	9
manic	9
matin	7
mucin	9

6 Letters	Scrabble® Points
intima	8
manitu	8
mantic	10
tunica	8
aminic	10

7 Letters	Scrabble® Points
minutia	9

8 Letters	Scrabble® Points
actinium	12