What are the subatomic particles present in an atom.
Answers
Subatomic particles include electrons, the negatively charged, almost massless particles that nevertheless account for most of the size of the atom, and they include the heavier building blocks of the small but very dense nucleus of the atom, the positively charged protons and the electrically neutral neutrons.
Answer:
PROTONS:
Protons are positively charged particles found within atomic nuclei. ... Three quarks make up each proton — two "up" quarks (each with a two-thirds positive charge) and one "down" quark (with a one-third negative charge) — and they are held together by other subatomic particles called gluons, which are massless.
The proton was discovered by Ernest Rutherford in the early 1900's.
ELECTRONS:
An electron is a negatively charged subatomic particle. It can be either free (not attached to any atom), or bound to the nucleus of an atom.
Electron was discovered by J. J. Thomson in 1897 when he was studying the properties of cathode ray.
NUETRON:
An uncharged elementary particle that has a mass nearly equal to that of the proton and is present in all known atomic nuclei except the hydrogen nucleus.
In 1932, the physicist James Chadwick conducted an experiment in which he bombarded Beryllium with alpha particles from the natural radioactive decay of Polonium.