Are there any isotopes of arsenic?
There is only one stable isotope of arsenic, but there are dozens of unstable isotopes of this element. Use the link below to investigate further. Another contributor pointed out that there would have to be at least one isotope of an element known if that element itself was known. Otherwise the element would remain unknown.
Most elements have different types of atoms. These variations on an element's atoms are called isotopes and have different numbers of neutrons and thus different atomic masses. It is also possible to artificially create other isotopes of elements that do not exist "naturally," even for the few elements that normally have only one isotope (e.g. gold, arsenic, cobalt, aluminum, phosphorus).
Arsenic, As, is not found in group 1, the Alkali metals, but is found in the nitrogen group. It is the 33rd element, between Germanium and Selenium. It is also a metalloid, which means it possess charateristics of both metals and nonmetals. It's most stable isotopes are As-73, As-74 and As-75. In te late centuries, Arsenic was used in medicine as arsphenamine and arsenic trioxide. It was also used as a chemical weapon after WW1…
Why do the isotopes of hydrogen have a greater ratio of mass difference than the ratios for any other isotopes of other elements?
Do isotopes exist independently to form an element or do all the isotopes when combined constitute an element?
Yes, arsenic and most arsenic containing compounds are poisonous. Arsenic poisoning from injection, ingestion, or inhalation as well as chronic arsenic poisoning can be fatal. Arsenic notably interrupts ATP production, inhibits the production of enzymes in the organs, and is a carcinogen. Depending on how the arsenic is introduced to the body and how much the symptoms of arsenic poisoning varies widely.