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Radioactive Half Life Formula

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Radioactive Half Life is defined as the time required for a quantity of radioactive substance to decay to half of it's initial value. Check FAQs

T 1/2 = 0.693 \cdot ζ

T_1/2 - Radioactive Half Life?ζ - Mean Life Time?

Radioactive Half Life Example

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With units

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Here is how the Radioactive Half Life equation looks like with Values.

Here is how the Radioactive Half Life equation looks like with Units.

Here is how the Radioactive Half Life equation looks like.

0.0002 = 0.693 \cdot 0.0003

0.0002Year = 0.693 \cdot 0.0003Year

0.0002 = 0.693 \cdot 0.0003

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Radioactive Half Life Solution

Follow our step by step solution on how to calculate Radioactive Half Life?

FIRST Step Consider the formula

T 1/2 = 0.693 \cdot ζ

Next Step Substitute values of Variables

∴

T 1/2 = 0.693 \cdot 0.0003Year

Next Step Convert Units

∴

T 1/2 = 0.693 \cdot 9151.5161s

Next Step Prepare to Evaluate

∴

T 1/2 = 0.693 \cdot 9151.5161

Next Step Evaluate

∴

T 1/2 = 6342.00064344s

Next Step Convert to Output's Unit

∴

T 1/2 = 0.00020097Year

LAST Step Rounding Answer

∴

T 1/2 = 0.0002Year

Radioactive Half Life Formula Elements

Variables

Radioactive Half Life

Radioactive Half Life is defined as the time required for a quantity of radioactive substance to decay to half of it's initial value.

Symbol: T_1/2

Measurement: TimeUnit: Year

Note: Value should be between 0 to 2345.

Formulas to find Radioactive Half Life

Mean Life Time

Mean Life Time is the average lifetime of an atomic nucleus in a radioactive sample.

Symbol: ζ

Measurement: TimeUnit: Year

Note: Value should be between 0 to 3445.

Formulas to find Mean Life Time

Other formulas in Nuclear Chemistry category

Go Binding Energy Per Nucleon

B.E per nucleon = \frac{∆m \cdot 931.5}{A}

Go Mean Life Time

ζ = 1.446 \cdot T 1/2

Go Packing Fraction

PF = \frac{∆m}{A}

Go Packing Fraction (In Isotopic mass)

PF isotope = \frac{(A isotope - A) \cdot (10^{4})}{A}

How to Evaluate Radioactive Half Life?

Radioactive Half Life evaluator uses Radioactive Half Life = 0.693*Mean Life Time to evaluate the Radioactive Half Life, Radioactive Half Life is defined as the time required for a quantity of radioactive substance to decay to half of it's initial value. Radioactive Half Life is denoted by T_1/2 symbol.

How to evaluate Radioactive Half Life using this online evaluator? To use this online evaluator for Radioactive Half Life, enter Mean Life Time (ζ) and hit the calculate button.

FAQs on Radioactive Half Life

What is the formula to find Radioactive Half Life?

The formula of Radioactive Half Life is expressed as Radioactive Half Life = 0.693*Mean Life Time. Here is an example- 8.8E-8 = 0.693*9151.51608.

How to calculate Radioactive Half Life?

With Mean Life Time (ζ) we can find Radioactive Half Life using the formula - Radioactive Half Life = 0.693*Mean Life Time.

Can the Radioactive Half Life be negative?

No, the Radioactive Half Life, measured in Time cannot be negative.

Which unit is used to measure Radioactive Half Life?

Radioactive Half Life is usually measured using the Year[Year] for Time. Second[Year], Millisecond[Year], Microsecond[Year] are the few other units in which Radioactive Half Life can be measured.

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