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How long will it take for radiation level of strontium 85 to drop to 1 4 its original level?
So, two half-lives are required for radiation level of Sr-85 to drop to one-fourth of its initial level. Amount X/4 continues to decay; it will take one more half life to reduce to X/8. So, three half lives are required for radiation level of Sr-85 to drop to one-eighth of its initial level.
How long will it take for the radiation level of strontium 85 to drop to half of its original level Express your answer as an integer?
Strontium (Sr-85) has a half life of 65 days. A half life of a radioactive isotope is the time required to decay to half the amount.
What is the half life of strontium 85?
64.84 days
Strontium-85 is a radioactive isotope that has a half-life of 64.84 days.
What type of radiation does strontium 85 emit?
gamma ray
Strontium is metabolized by the body in a manner closely paralleling calcium (7, 10). The use of radioactive strontium 85 (Sr85), a gamma ray emitter, permits detection of focal areas of increased calcium turnover by external scintillation counting or automatic scintillation scanning.
How many neutrons does strontium 85 have?
85 protons and 38 neutrons b.
Is strontium 85 stable or unstable?
Natural strontium is a mixture of four stable isotopes(1): strontium-84, strontium-86, strontium-87, and strontium-88(2). Strontium-73 through -83, strontium-85, and strontium-89 through -105 are artificially produced and are radioactive(2).
How much does strontium cost?
Prices of chemical elements
Z | Symbol | Price |
---|---|---|
USD/L | ||
36 | Kr | 1.1 |
37 | Rb | 23700 |
38 | Sr | 17.2–17.6 |
Is strontium 87 naturally occurring?
Strontium 87 Carbonate (Strontium-87) is a stable (non-radioactive) isotope of Strontium. It is both naturally occurring and produced by fission.
Does water softener remove strontium?
This study shows a household water softener, configured normally for hardness reduction, can reduce influent Strontium from >20 mg/L to below the US EPA’s current Health Reference Level of 1.5 mg/L. Softener beds with apparent ages up to 19 years were effective at reducing Strontium.
How do you remove strontium from drinking water?
Lime softening was found to be the most effective treatment process, removing strontium by 75% (Alexander et al., 1954). Parks and Edwards (2006) examined the impact of sodium carbonate addition to pH 10.3 to remove strontium from drinking water sources.
Is strontium highly radioactive?
Naturally occurring strontium is not radioactive. The most common man-made radioactive form of strontium is strontium-90 (Sr-90). Strontium-90 is produced commercially through nuclear fission.
How many shells are there in strontium?
Data Zone
Classification: | Strontium is an alkali earth metal |
---|---|
Protons: | 38 |
Neutrons in most abundant isotope: | 50 |
Electron shells: | 2,8,18,8,2 |
Electron configuration: | [Kr] 5s2 |