Home
Class 12
CHEMISTRY
Shorter the radioactive half life...

Shorter the radioactive half life

A

Greater is the number of atoms disintegrating per second

B

Smaller is the decay constant

C

Less reactive is the parent nucleus

D

Greater is the mass–energy change

Text Solution

Verified by Experts

The correct Answer is:
A, D

(a) Greater is the number of atoms disintegrating per second.
(d) Greater is the mass-energy change.
Promotional Banner

Similar Questions

Explore conceptually related problems

N atoms of a radioactive substance emit n alpha -particles per second. The half life of the radioactive substance is

In a sample of radioactive material , what fraction of the initial number of active nuclei will remain undisintegrated after half of the half life of the sample ?

Definition OF radioactivity||Activity OF a sample||Laws OF radioactivity||Half life||Mean life||Examples on radioactivity

At t=0 , number of radioactive nuclei of a radioactive substance are x and its radioactivity is y. Half-life of radioactive substance is T. Then,

Calculate the ratio of half-life to the mean life of a radioactive sample . If lambda be the decay constant of a radioactive sample.

The activity of a nucleus is inversely proportional to its half of average life. Thus, shorter the half life of an element, greater is its radioactivity, i.e., greater the number of atomsd disintegrating per second. The relation between half life and average life is t_(1//2) = (0.693)/(lambda) = tau xx 0.693 or tau = 1.44 t_(1//2) The half life of a radioactive element is 10 years. What percentage of it will decay in 100 years?

Activity of a radioactive substance decreases from 8000 Bq to 1000 Bq in 9 days. What is the half-life and average life of the radioactive substance?