user: Question: What is the name of the element with isotopic mass of 158.925 34(2)?
Columns: ['Element', 'Nuclide', 'Z ( p )', 'N ( n )', 'isotopic mass ( u )']
Types: ['text', 'text', 'real', 'real', 'text']
Sample row: ['beryllium', '9 Be', 4.0, 5.0, '9.012 182(3)']
SQL:

assistant: SELECT "Element" FROM "Table" WHERE "isotopic mass ( u )" = '158.925 34(2)';