Help me out please If an element sample has two or more atoms with the same number of protons but different number of neutrons it is called a(n)

isotope

neutron

electron

none of the above

b is the best answer for this question.

d) center of the mid-ocean ridge

give brainleysest

sinserly,

steckh986

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