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Beryllium

Royal Observatory of Belgium ROB Logo
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Atomic number: 4     Symbol: Be

Average atomic weight: 9.0121831(5) u

IsotopeFractionAtomic weight/u
91(0)9.012183065(82)

Atomic weights and isotopic compositions were obtained from NIST Database 144



Be I (Be-like): 197 levels, 3440 lines (E1: 2925 IC: 514 M2: 1), transition probabilities for 1752 lines

Be II (Li-like): 217 levels, 2844 lines (E1: 2844), transition probabilities for 789 lines

Be III (He-like): 194 levels, 1999 lines (E1: 1935 IC: 63 M1: 1), transition probabilities for 1838 lines

Be IV (H -like): 100 levels, 824 lines (E1: 824), transition probabilities for 824 lines


(Atomic Line List v3.00b5)


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