Question

Calculate the decay constant, in s ^ - 1 of sodium-24, which has a half-life of 15 h.

Answer 1

Answer:

1.28×10⁻⁵ s⁻¹

Explanation:

The decay constant λ is defined as:

λ = (ln 2) / T,

where T is the half life.

Convert hours to seconds:

15 h × (3600 s/h) = 54,000 s

Plug and solve:

λ = (ln 2) / (54,000 s)

λ = 1.28×10⁻⁵ s⁻¹