Why electrons present around the nucleus of an atom do not fall into the nucleus

The wilson chamber is used to study: direction, speed, and distance of radioactivity the intensity of radiation the appearance of individual atoms all of the above

Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?