An atom of silver has a radius of 165. pm and the average orbital speed of the electrons in it is about 1.0 x 10^8m/s.

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

Based on its chemical properties, identify the position of each chemical family on the periodic table.

Which process transfers heat from inside earth to its surface? convection currents in mantle pulling away of tectonic plates drawing in of tectonic plates convection currents in crust