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The most stable isotope is 231 Pa with a half-life of 32,760 years, 233 Pa with a half-life of 26.967 days, and 230 Pa with a half-life of 17.4 days. All of the remaining radioactive isotopes have half-lives less than 1.6 days, and the majority of these have half-lives less than 1.8 seconds.
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Radium (88 Ra) has no stable or nearly stable isotopes, and thus a standard atomic weight cannot be given. The longest lived, and most common, isotope of radium is 226 Ra with a half-life of 1600 years.
An example SDS, including guidance for handling a hazardous substance and information on its composition and properties. A safety data sheet (SDS), [1] material safety data sheet (MSDS), or product safety data sheet (PSDS) is a document that lists information relating to occupational safety and health for the use of various substances and products.
[1] [2] As such, they serve the same purpose as the well-known R-phrases, which they are intended to replace. Hazard statements are one of the key elements for the labelling of containers under the GHS, along with: [3] an identification of the product; one or more hazard pictograms (where necessary)
The University of Victoria (UVic) is a public research university located in the municipalities of Oak Bay and Saanich, British Columbia, Canada. [ 10 ] [ 11 ] [ 12 ] Established in 1903 as Victoria College , the institution was initially an affiliated college of McGill University until 1915.
Chemical technologists generally require completion of a specific college program—either two year or four year— in chemical, biochemical, or chemical engineering technology or a closely related discipline. [2] They usually work under or with a scientist such as a chemist or biochemist.
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