Which of the following is the correct order according to increasing in effective nuclear charge Zeff ? GIVE A REASON? A. Si < Al B. P < Si < Al
C. Al < Si D. P< Al < Si

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.