The brittlenes apparently depends on the form it takes (polycrystalline or single-crystalline). And while there are some radioactive isotopes of tungsten most of them are synthetic and only made in a lab. The vast majority of the tungsten found on earth is stable.
The brittlenes apparently depends on the form it takes (polycrystalline or single-crystalline). And while there are some radioactive isotopes of tungsten most of them are synthetic and only made in a lab. The vast majority of the tungsten found on earth is stable.