What is the rarest atomic particle known to man?

Question

my science teacher knows it but doesnt remember its name and he says its so rare cos it loses its radiation so quickly and becomes an ionic particle so fast its so rare

Answer 1

a quark

Answer 2

Besides the one serious and sensible answer so far, the rarest element is a tie between unobtanium (a euphemism for something expensive) and commonsensium.

Answer 3

It will be an element found at the bottom of the periodic table as they are the most reactive. It's probably 'Francium.'

Answer 4

"a quark"

no... not even close

the rarest atomic particle? well that would be ununoctium (or eka-radon) which is element 118. only 3 nuclei have ever been created.

that makes it the heaviest, and rarest particle of any known particle on the periodic table.

if you mean rarest particle in general. that would probably be one of any particles made of a particle antiparticle pair, such as the neutral pion, which has a half life of 8.4×10^−17 seconds.

if you mean the rarest elementary particle, that would probably be the tau lepton.

Answer 5

you're not asking about atoms.

The rarest particle is the Higgs Boson because we haven't found or produced any yet (until the Large Hadron Collider starts working).