JEE MAIN - Chemistry (2007 - No. 23)
Which of the following nuclear reactions will generate an isotope?
neutron particle emission
positron emission
$$\alpha$$-particle emission
$$\beta$$-particle emission
Giải thích
NOTE : Isotopes are atoms of same element having same atomic number but different atomic masses. Neutron has atomic number $$0$$ and atomic mass $$1.$$ So loss of neutron will generate isotope. $$e.g.,$$
$$${}_{92}{U^{238}} + {}_0{n^1} \to {}_{92}{U^{239}}$$$
$$${}_{92}{U^{238}} + {}_0{n^1} \to {}_{92}{U^{239}}$$$