हिंदी

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

Advertisements
Advertisements

प्रश्न

Complete the following equation describing nuclear decay.

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

संक्षेप में उत्तर
रासायनिक समीकरण/संरचनाएँ
रिक्त स्थान भरें
Advertisements

उत्तर

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

Em (Emanation) ≡ Rn (Radon)

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

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 15: Structure of Atoms and Nuclei - Exercises [पृष्ठ ३४३]

APPEARS IN

बालभारती Physics [English] Standard 12 Maharashtra State Board
अध्याय 15 Structure of Atoms and Nuclei
Exercises | Q 14. (a) | पृष्ठ ३४३

संबंधित प्रश्न

Sample of carbon obtained from any living organism has a decay rate of 15.3 decays per gram per minute. A sample of carbon obtained from very old charcoal shows a disintegration rate of 12.3 disintegrations per gram per minute. Determine the age of the old sample given the decay constant of carbon to be 3.839 × 10−12per second.


Complete the following equation describing nuclear decay.

\[\ce{_8^19O->e^- { +}}\] _____


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?


Write relation between decay constant of a radioelement and its half-life.


The half-life of 35S is 87.8 d. What percentage of 35S sample remains after 180 d?


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


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


A 3/4 of the original amount of radioisotope decays in 60 minutes. What is its half-life?


A sample of 32P initially shows activity of one Curie. After 303 days, the activity falls to 1.5 × 104 dps. What is the half-life of 32P?


In Hydrogen, the electron jumps from the fourth orbit to the second orbit. The wavenumber of the radiations emitted by an electron is ______  


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 of half-life 69.3 days is kept in a container. The time in which 80% of the substance will disintegrate will be ______

[take ln(5) = 1.61]


The rate of radioactive disintegration at an instant for a radioactive sample of half-life 2.2 x 109 s is 1010 s-1. The number of radioactive atoms in that sample at that instant is, ______ 


Most excited states of an atom have life times of about ____________.


The activity of a radioactive sample ____________.


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 ______.


A radioactive element has rate of disintegration 10,000 disintegrations per minute at a particular instant. After four minutes it become 2500 disintegrations per minute. The decay constant per minute 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 ______.


The graph obtained by plotting loge (A) [A is the activity of a radioactive sample] against t (time) out of the following is:


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×