Cells were first discovered by Robert Hook in 1665. He observed the cells in a cork slice with the help of a primitive microscopic. Later […]
CHEMICAL CHANGE A change in which a new substance is formed. INDICATION OF A CHEMICAL CHANGE ARE AS FOLLOWS change in state change in color […]
Isobars are atoms having the same mass number but different atomic number
Isotopes are atoms of the same element which have the same atomic number but different mass number
Atomic number is defined as the total number of proton present in the nucleus of an atom.
On the basis of his experiment on “scattering alpha-particles” he discovered the nucleus and put forward the nucleus model of an atom, which had the […]