For the first order reaction with rate constant \[k\], which expression gives the half-life period ? (Initial concentration \[=a\]) [MP PET/PMT 1998]

For the first order reaction with rate constant \[k\], which expressio

1.	For the first order reaction with rate constant \[k\], which expression gives the half-life period ? (Initial concentration \[=a\]) [MP PET/PMT 1998]
A.	\[\frac{{{1}^{2}}}{k}\]
B.	\[\frac{1}{ka}\]
C.	\[\frac{0.693}{k}\]
D.	\[\frac{3}{2k{{a}^{2}}}\]
Answer» D. \[\frac{3}{2k{{a}^{2}}}\]

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For the first order reaction with rate constant \[k\], which expression gives the half-life period ? (Initial concentration \[=a\]) [MP PET/PMT 1998]

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