Which of the Following Has the Longest Half Life

Rubidium-87 uranium-235 lead-206 nitrogen-14. Aldosterone is 20 min.

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Rubidium-87 potassium-40 carbon-14 uranium-238.

. A longer-acting benzodiazepine Xanax has a plasma-elimination half-life of around 11 hours. Furthermore what can be called long half-life is always relative to the length of the sampling period. Corticosterone half life is 6090 min renin is 1015 min.

However there are numerous other drugs with very long half-life examples are mefloquine 1441 days amiodarone 2178 days and oritavancin 393 h. The decay of tellurium-128 which has. But thorium 232 has a half-life of over 14 billion years which is much longer.

The half-life of fluoxetine and its active metabolite norfluoxetine is respectively 2 to 4 days and 7 to 15 days more extended than other SSRIs approximately 1 day. NE half life is approximately 2 min. Drugs that have a long half-life include.

Uranium-238 decays to which of the following daughter isotopes. For example cortisol has a half-life of 60 to 90 minutes while epinephrine an amino acid derived-hormone has a half-life of approximately one minute. Fentanyl 810 hr elimination half-life was followed by sufentanil 69 hr alfentanil 2 hr and remifentanil45Thus begat the fashion towards.

As for bismuth-209 - it only has the longest known half-life of any radioisotope that undergoes α-decay which does not mean that there are no elements with longer half-time as the article suggests. Trazodone a serotonin antagonist and reuptake inhibitor has a half-life of 5 to 13 hours. This marks the single longest half-life ever directly measured in a lab Wittweg added.

Correct option is A Triphenyl methyl carbocation is most stable because of maximum resonating structures 6 and aromaticityThe positive charge on the carbon of triphenylmethyl carbocation is distributed uniformly over a number of structures. Hebert in Clinical Pharmacology During Pregnancy 2013 3211 Half-life. The correct answer is E.

A long half-life means that an isotope is less active and that fewer of tis atomic nuclei disintegrate in any given period. Only one nuclear-decay process in the universe has a longer half-life. Half-life is the time it takes for the drug concentration to be reduced in half and is useful in determining dosing frequency.

The extended half-life of fluoxetine and its active metabolite may be an advantage in the poorly compliant patient and may offer a potential safety advantage over shorter-acting SSRIs with respect to abrupt. Click to see full answer. There are other nuclides with even longer half-lives but I cant remember them offhand and being on quasi-vacation I dont have my chart of the nuclides with me.

Which hormone has longest half life. The splitting apart of large isotopes into smaller ones is known as _____. Rubidium-87 potassium-40 carbon-14 uranium-238.

Although it decays very slowly it still degrades the glasses overtime. If a substance has a half-life of 44 hr how many hours will it take for 28 g of the substance to be depleted to 35 g. Uranium-238 through a series of decay processes will eventually become.

Which of the following radioactive isotopes has the longest half-life. What is the half-life for this process. Which of the following radioactive isotopes has the shortest half-life.

Consequently which hormone has the longest half life. Which of the following radioactive isotopes has the longest half-life. 13 Identify the nuclide that has the longest half-life.

DHEA is 1538 min. Which of the following analgesic compounds has the longest elimination half life. Which of the following has the longest half-life.

Coinciding with this trend was the introduction of fentanyl analogues with faster and faster elimination. Uranium 238 U-238 has a half-life of almost 45 billion years which makes it the longest-lived uranium isotope. The aromaticity of the phenyl groups gives many possible resonance structures and thus more.

The time required for one-half of the nuclei in a radioactive isotope to decay is called the _____. Free neutrons decay with a decay constant of 00670 min1. Half-life is dependent on both clearance and volume of distribution such that a decrease in clearance as might be seen with a CYP1A2 or CYP2C19 substrate or an increase.

Librium chlordiazepoxide is an even longer-acting benzodiazepine drug. A U 235 92 B C 14 C Rn 220 86 D Th 219 90 E Th 232 90 Answer. As a result they remain in circulation longer than peptide hormones.

The naturally occurring Th-232 has an exceedingly long half-life of 14 billion years as long as the age of the universe which is very unusual for elements of such high atomic numbers. Which indicator of protein status has the longest half-life. Which of the following has the longest half-life.

Mianserin a tetracyclic antidepressant has a. Thorium used to be an ingredient of optical glasses Thoriated glass. Which of the following is a measure of somatic protein status.

Uranium-235 has a half-life of 700 million years while uranium-234 has a half-life of only 25 million years 203.

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