Later, the element bohrium was named after him. They are manganese (Mn), technetium (Tc), rhenium (Re), and bohrium (Bh). Technetium, rhenium, and bohrium have no known biological roles. Therefore, oxyfluoride formation for bohrium may help to indicate eka-rhenium properties. Despite this, the name bohrium for element 107 was recognized internationally in 1997. Bohrium has no stable or naturally occurring isotopes. In the 1970s he claimed as his discovery two transition metal elements&colon; seaborgium and bohrium. Bohrium may therefore show these lower states as well. This placed bohrium as a typical member of group 7. Thus bohrium is expected to form a stable +7 state. Bohrium is a synthetic element that does not occur in nature. Bohrium is a synthetic chemical element with the symbol Bh and atomic number 107. Bohrium is a synthetic element and is too radioactive to be used in anything. Bohrium is only produced in nuclear reactors and has never been isolated in pure form.