| 31. | The six commonly recognised metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium.
|
| 32. | Two of the groups are composed of transition metals and the third group consists of metals and metalloids.
|
| 33. | Tellurium is a rare, mildly toxic metalloid that is primarily used as a machining additive to steel.
|
| 34. | Recognition status, as metalloids, of some elements in the p-block of the periodic table.
|
| 35. | During the 1920s the two meanings of the word metalloid appeared to be undergoing a transition in popularity.
|
| 36. | Arsenic efflux systems are found in nearly every organism and evolved to rid cells of this toxic metalloid.
|
| 37. | About 91 of the 118 elements in the periodic table are metals, the others are nonmetals or metalloids.
|
| 38. | Phosphorus, selenium and lead, which are less often recognised as metalloids, are also used in glasses.
|
| 39. | Of the less often recognised metalloids, phosphorus, gallium ( in particular ) and selenium have semiconductor applications.
|
| 40. | Metalloids have properties of both metals and nonmetals, but the term'metalloid'lacks a strict definition.
|
