Chemical bonding generates arrangements of electrons that usually resemble the noble gases. the best explanation for this is that noble gases a. are inert. b. have full valence electron shells. c. exist as gases at room temperature. d. are on the far right end of the periodic table.

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave