group 5 elements
... that all stable group 5 elements are silvery-blue refractory metals?
... that all stable <b id="mwA_E"><a href="./Group_5_element" id="mwA_I" rel="mw:WikiLink" title="Group 5 element">group<span id="mwA_M" typeof="mw:Entity"> </span>5 elements</a></b> are silvery-blue <a href="./Refractory_metals" id="mwA_Q" rel="mw:WikiLink" title="Refractory metals">refractory metals</a>?