$A$ free neutron decays spontaneously into:

  • A
    a proton, an electron and anti-neutrino
  • B
    a proton, an electron and a-neutrino
  • C
    a proton and electron
  • D
    a proton, an electron, a neutrino and an anti-neutrino

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In the nuclear decay sequence given below:
$_Z{X^A} \to {}_{Z + 1}{Y^A} \to {}_{Z - 1}{K^{A - 4}} \to {}_{Z - 1}{K^{A - 4}}$
the particles emitted in the sequence are:

$A$ free neutron decays spontaneously into :

In the following nuclear reaction,$x$ stands for: $n \rightarrow p + e^{-} + x$

The unit for nuclear dose given to a patient is

The $A_{92}U^{238}$ nucleus decays to a $Pb^{214}_{82}$ nucleus. The number of $\alpha$ and $\beta^{-}$ particles emitted are:

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