The electron configuration for helium (he) is shown below.        1s2              which diagram shows the correct distribution of electrons in the electron shells of a helium atom?

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?

Which of the following are good traits of a hypothesis? it will be able to be testedit can predict an outcomeit will explain the observationsall of these

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.