Author: StopLearn Team 2

Embedded in an atom which consists of a nucleus that is positively charged and which revolves round the orbit is […]

The discreteness of atomic energy levels was first shown directly in the Franck-Hertz experiment. This experiment is one of the […]

In Figure 25.1, we’ve drawn a few of the energy levels of a hypothetical atom. Let’s start by looking at […]

Some of the important postulates of the Bohr’s model of the atom were that the electrons moved around the nucleus […]

Below are the applications of Photoelectric effect: The photoelectric effect is used in the photoelectric cell which converts a light […]

INTRODUCTION In 1887, photoelectric effect was invented by the scientist H. Hertz. When we passing a light into a material, the material […]

Radioactivity is a spontaneous process. It goes on independent of external control. it is not affected by  temperature or pressure […]

Although scientists have only known about radiation since the 1890s, they have developed a wide variety of uses for this […]

Radioactivity refers to the particles which are emitted from nuclei as a result of nuclear instability. Because the nucleus experiences […]

Nuclear Energy The protons and neutrons (nucleons) in the nucleus of each atom are held together by very powerful nuclear […]