Boron, germanium, aluminum, silicon and antimony are all semimetals right?

or am i wrong on this?

i don't think aluminum. Antimony, aresenic, boron, germanium, selenium, silicon, tellurium. double check though.

You are partially correct. Out of the elements you listed, boron, germanium, and silicon are commonly classified as semimetals, also known as metalloids. These elements have properties intermediate between metals and nonmetals. They exhibit some characteristics of metals, such as being good conductors of electricity, but also have nonmetallic properties, such as brittleness.

However, aluminum (Al) is not considered a semimetal. It is classified as a typical metal and is a member of the group called post-transition metals. Aluminum is a good conductor of electricity and has metallic properties, such as malleability and ductility.

As for antimony (Sb), arsenic (As), selenium (Se), and tellurium (Te), they are indeed classified as semimetals or metalloids. These elements have properties similar to boron, germanium, and silicon.

To double-check such information, you can refer to a reliable periodic table or consult reputable sources such as chemistry textbooks, scientific journals, or credible websites like those of educational institutions or scientific organizations.