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CBSE Class 12-science Answered

can v say luking at de symbol,atomic num,atomic mass whether it will undego alpha,beta or gamma decay??
Asked by richajohn14 | 15 Dec, 2011, 12:00: AM
answered-by-expert Expert Answer
elements of atomic number >82 are radioactive.
their neutron proton ratio  says they will radiate alpha, beta or gama rays. but we can not predict which onme.
by seeing the product or the element after radiation we can say which radiations were emitted.
Answered by | 19 Dec, 2011, 12:43: PM

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CBSE 12-science - Physics
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CBSE 12-science - Physics
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CBSE 12-science - Physics
. A nucleus of mass number 240 and having binding energy/nucleon 7.6 MeV splits into two fragments Y, Z of mass numbers 110 and 130 respectively. If the binding energy/nucleon of Y, Z is equal to 8.5 MeV each, calculate the energy released in the nuclear reaction.
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Asked by kailasks2007 | 28 Dec, 2023, 08:14: PM
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CBSE 12-science - Physics
Please answer this question. Draw a graph showing the variation of binding energy per nucleon as a function of mass number A. The binding energy per nucleon for heavy nuclei (A > 170) decreases with the increase in mass number. Explain.
Asked by varma.renu9481 | 06 Mar, 2023, 05:44: PM
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CBSE 12-science - Physics
55Cs124(Z=55,A=124) has a half life of 30.8s. (a) If we have 7.8 microgram initially, how many nuclei are presents? How many are present 2 min later? (b) What is the activity at this time? (c) After how much time will the activity drop to less than about 1 per second?
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CBSE 12-science - Physics
the atomic masses of two different nuclei are 3 and 81 then the ratio of their radius r
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CBSE 12-science - Physics
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Asked by sharonashoksp | 27 Jun, 2021, 02:44: PM
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CBSE 12-science - Physics
Nuclear density of hydrogen is 2.3x1017 kg/m3. Given A = 56 for iron, find its nuclear density
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CBSE 12-science - Physics
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CBSE 12-science - Physics
Carbon-14(C14) decays at a constant rate in such a way that it reduces to 50% in 5568 years. Find the age of an old wooden piece in which the carbon is only 25% of the original.
Asked by rajubarman | 01 Dec, 2019, 10:03: AM
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