what happens in the artificial transmutation of an element?. Give an example. Please help asap and thanks!

Answer 1

usually neutron(s) are captured by the nucleus

some (or one) of the neutrons then undergoes beta decay, becoming a proton and changing the atomic number (becoming a different element)

the transuranic element Einsteinium (Es) was discovered in the fallout from the 1st thermonuclear (hydrogen) bomb test
due to the high neutron flux, some uranium atoms had captured multiple neutrons and had undergone multiple beta decays to be transmuted