Alpha particles are
Alpha particles are
- [AIPMT 1999]
- A
$2$ free protons
- B
doubly ionised helium atoms
- C
helium atoms
- D
singly ionised helium atoms
Similar Questions
During a negative beta decay
During a negative beta decay
- [IIT 1987]
In the nuclear reaction: $X(n,\,\alpha ){\,_3}L{i^7}$ the term $X$ will be
In the nuclear reaction: $X(n,\,\alpha ){\,_3}L{i^7}$ the term $X$ will be
- [AIEEE 2005]
Assertion: ${}_Z{X^A}$ undergoes a $2\alpha -$ decays, $2\beta -$ decays and $2\gamma - $ decays and the daughter product is ${}_{Z - 2}{X^{A - 8}}$
Reason : In $\alpha - $decays the mass number decreases by $4$ and atomic number decreases by $2$. In $2\beta - $ decays the mass number remains unchanged, but atomic number increases by $1$ only.
Assertion: ${}_Z{X^A}$ undergoes a $2\alpha -$ decays, $2\beta -$ decays and $2\gamma - $ decays and the daughter product is ${}_{Z - 2}{X^{A - 8}}$
Reason : In $\alpha - $decays the mass number decreases by $4$ and atomic number decreases by $2$. In $2\beta - $ decays the mass number remains unchanged, but atomic number increases by $1$ only.
- [AIIMS 2001]
Neutrino is a particle which
Neutrino is a particle which
A free neutron decays into a proton but a free proton does not decay into neutron. This is because
A free neutron decays into a proton but a free proton does not decay into neutron. This is because
- [JEE MAIN 2023]