atomic number 34
Noun: A chemical element with the atomic number 34. It is a nonmetallic, often toxic element that shares chemical properties with sulfur and tellurium. It exists in several different structural forms (allotropes), including a stable, gray, metallic-looking form. This particular form has the unusual property of conducting electricity more effectively when exposed to light, making it useful in devices like photocells. It is commonly found in nature within sulfide minerals, such as pyrite.
The term 'atomic number 34' is the formal, scientific identifier for the element selenium. It is used primarily in technical, chemical, and educational contexts to specify the element unambiguously by its number of protons. * In the periodic table, atomic number 34 is found between arsenic and bromine. * The sample was confirmed to contain atomic number 34.
- In nuclear notation: The atomic number (34) is written as a subscript before the element symbol (e.g., ₃₄Se).
- In systematic nomenclature: In some scientific naming systems, especially for newly synthesized or theoretical elements, the atomic number itself might be used in place of a name.
- Selenium (n): The common name for the element with atomic number 34.
- Se (n): The chemical symbol for selenium/atomic number 34.
- Selenium
- Element 34
- Se (chemical symbol)
(This term is a precise scientific identifier; it does not have idiomatic or phrasal verb uses in everyday language.)
- a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite)