English

Complete the following equation describing nuclear decay. +A88226A2882226Ra⟶A24A2224α + _____

Advertisements
Advertisements

Question

Complete the following equation describing nuclear decay.

\[\ce{_88^226Ra->_2^4\alpha {+}}\] ______.

Answer in Brief
Chemical Equations/Structures
Fill in the Blanks
Advertisements

Solution

\[\ce{_88^226Ra->_2^4\alpha{ +} \underline{\ce{_86^222Em}}}\]

Em (Emanation) ≡ Rn (Radon)

Here, α particle is emitted, and radon is formed.

shaalaa.com
  Is there an error in this question or solution?
Chapter 15: Structure of Atoms and Nuclei - Exercises [Page 343]

APPEARS IN

Balbharati Physics [English] Standard 12 Maharashtra State Board
Chapter 15 Structure of Atoms and Nuclei
Exercises | Q 14. (a) | Page 343

RELATED QUESTIONS

Complete the following equation describing nuclear decay.

\[\ce{_7^12N -> _6^12C {+}}\] ______


Choose the correct option.

\[\ce{^60_27CO}\] decays with a half-life of 5.27 years to produce \[\ce{^60_28Ni}\]. What is the decay constant for such radioactive disintegration?


Derive the relationship between half-life and decay constant of a radioelement.


Decay constant of 197Hg is 0.017 h-1. What is its half-life?


The half-life of 67Ga is 78 h. How long will it take to decay 12% of the sample of Ga?


0.5 g sample of 201Tl decays to 0.0788 g in 8 days. What is its half-life?


65% of 111In sample decays in 4.2 d. What is its half-life?


The half-life of radon is 3.82 d. By what time would 99.9% of radon will be decayed?


A sample of old wood shows 7.0 dps/g. If the fresh sample of tree shows 16.0 dps/g, how old is the given sample of wood? (Half-life of 14C is 5730 y)


The half-life of a certain radioactive species is 6.93 × 105 seconds. What is the decay constant?  


Show that half life period of radioactive material varies inversely to decay constant λ.


Show that for radioactive decay N(t) = `"N"_"O" "e"^{-λ"t"}`, where symbols have their usual meaning.


Obtain an expression for the half-lifetime of radioactive material. Hence state the relation between an average life and half life time of radioactive material.


A radioactive substance has half life of 3 hours. 75 % of the substance would decay in ____________.


The radioactivity of a sample is R1 at a time T1 and R2 at a time T2. If the half-life of the specimen is T, the number of atoms that have disintegrated in the time (T1 - T2) is proportional to ______.


For radioactive substances, the fraction of its initial quantity (N0) which will disintegrate in its average lifetime is about ______.

(e = 2.71)


The activity of a radioactive substance decreases by a factor of 32 in one hour. The half-life of the substance (in min) is ______.


A radioactive sample S1​ having the activity A1​ has twice the number of nuclei as another sample S2​ of activity A2​ If A2​ = 2A1​ then the ratio of half-life of S1​ to the half-life of S2​ is ______.


If the number of nuclei of a radioactive substance becomes `1/e` times the initial number in 10 days, what is the decay constant of the substance?


Show that the number of nuclei of a radioactive material decreases exponentially with time.


Define half-life period.


In one mean lifetime of a radioactive element the fraction of the nuclei that has disintegrated is ______. [e is the base of natural logarithm]


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×