Question

Which are the Isotopes in the Modern Periodic table? Why Mendeleev didn't predict about the Isotopes?

Answer 1

In greek language..... "iso" means same and "topos" means place.The periodic table has atoms with the same atomic number but different atomic weights in the same place in the table. All the atoms of an element have the same atomic number (number of protons), but they can have different numbers of neutrons and different masses.We say that isotopes of an element are atoms that have the same number of protons, but different numbers of neutrons.the isotopes are deuterium and tritium. Mendeleev came to believe in his periodic table to such a degree that he changed the atomic mass of known elements so that they fit where they "belonged" in his table. He did this with no experimental evidence, only his belief in his table.hope this helped pl mark as brainliest