Cuál de estas fuerzas ayuda a los protones y neutrones a permanecer en el centro del átomo? (2 puntos) fuerza gravitacional
fuerza electromagnetica
fuerza nuclear fuerte
fuerza nuclear débil

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

How many neutrons does a atom of cobalt have?

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.