According to dutch scientist christiaan huygens, what was light made of? atoms particles waves electrons

Which fact represents evidence for the big bang theory?

Which of the following units is not an official si unit

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.