00:01Hey guys, the more you don't know, the more opportunities you have to learn.
00:08In this series we will learn about isotopes.
00:13Atoms of the same element which have the same atomic number but different mass numbers are called isotopes.
00:21Since the atomic number of different isotopes of the same element is the same,
00:26it means that they have the same number of electrons and protons.
00:32The difference in their mass numbers is due to different number of neutrons present in their nuclei.
00:40As an illustration, here is a hydrogen atom.
00:45The nucleus of a hydrogen atom consists of a proton, this nucleus is surrounded by an electron.
00:53Thus the atomic number and mass number of hydrogen are one.
01:00In addition to hydrogen, there is also deuterium.
01:05There is an additional neutron in its atomic nucleus.
01:10Since it still has the same number of electrons and protons, the symbol for deuterium is the same as the symbol for hydrogen.
01:19It's just that its mass number changes to two.
01:26One more tritium.
01:29This time the nucleus of a hydrogen atom gets an additional to neutron units.
01:36Like hydrogen, the symbol for tritium is H.
01:39Unlike hydrogen, the mass number of tritium is three.
01:47Thus, hydrogen has three isotopes.
01:52Hopefully this short tutorial can provide an overview related to isotopes.
01:57Happy learning everyone!
Comments