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20 answers for: Atomic number 55
RANKANSWERCLUE
CESIUMAtomic number 55
CAESIUMMetallic element with atomic number 55
SEAUThe Chargers retired his number 55
BARACKOBAMAPresident number 55-Across
NINETYAtomic number of thorium; or, the number of degrees of an angle opposing the hypotenuse (6)
NINENumber of sides of a nonagon; or, the atomic number of the element fluorine (4)
ZINCElement with atomic number 30, alloyed with its neighbour in the periodic table (number 29) since ancient times
MASSNUMBERAtomic number
PROTONSANDNEUTRONS
Atomic number
SODIUMAtomic number 11
COBALTAtomic number 27
NITROGENAtomic number 7
RADONAtomic number 86
ISOMEREqual in atomic number
OSMIUMIt has atomic number 76
KRYPTONIts atomic number is 36
NINETYONEProtactinium's atomic number
CALIFORNIUMRadioactive element of atomic number 98
EIGHTYMercury's atomic number
IRONAtomic number 26