A nucleus of lead $Pb _{82}^{214}$ emits two electrons followed by an $\alpha$-particle. The resulting nucleus will have
A nucleus of lead $Pb _{82}^{214}$ emits two electrons followed by an $\alpha$-particle. The resulting nucleus will have
- [KVPY 2011]
- A
$82$ protons and $128$ neutrons
- B
$80$ protons and $130$ neutrons
- C
$82$ protons and $130$ neutrons
- D
$78$ protons and $134$ neutrons
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An atom of mass number $15$ and atomic number $7$ captures an $\alpha - $ particle and then emits a proton. The mass number and atomic number of the resulting product will respectively be
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- [AIIMS 2016]
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A nuclear reaction is given by
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- [AIIMS 2012]