Answer: boron (B) germanium (Ge) and tellurium (Te)
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Boron is a chemical element with the symbol B and atomic number 5. Produced entirely by cosmic ray spallation and supernovae and not by stellar nucleosynthesis it is a low-abundance element in the Solar system and in the Earth's crust. Boron is concentrated on Earth by the water-solubility of its m…
Polonium is a chemical element with the symbol Po and atomic number 84. A rare and highly radioactive metal with no stable isotopes polonium is chemically similar to selenium and tellurium though its metallic character resembles that of its horizontal neighbors in the periodic table: thallium lead and bismuth. Due t…
Astatine is a radioactive chemical element with the symbol At and atomic number 85. It is the rarest naturally occurring element in the Earth's crust occurring only as the decay product of various heavier elements. All of astatine's isotopes are short-lived; the most stable is astatine-210 with a half-life of 8.1 hours. A sample of the pure element has never been assembled because any macroscopic specimen would be immediately v…
Germanium is a chemical element with the symbol Ge and atomic number 32. It is a lustrous hard-brittle grayish-white metalloid in the carbon group chemically similar to its group neighbours silicon and tin. Pure germanium is a semiconductor with an appearance similar to elemental silicon. Like silicon germanium …
Antimony is a chemical element with the symbol Sb and atomic number 51. A lustrous gray metalloid it is found in nature mainly as the sulfide mineral stibnite. Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics often known by the Arabic name kohl. M…
Tellurium is a chemical element with the symbol Te and atomic number 52. It is a brittle mildly toxic rare silver-white metalloid. Tellurium is chemically related to selenium and sulfur all three of which are chalcogens. It is occasionally found in native form as elemental crystals. Tellurium is far more common in …
Lists of metalloids - Wikipedia
Lists of metalloids - Wikipedia
Metalloids in the Periodic Table - Science Struck
Which lists only metalloids? ...
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