Which statement describes a step in the formation of an ionic bond?
an attraction occurs between two ions that have the same charge.
a metal atom forms a cation, and a nonmetal atom forms an anion.
a more electronegative atom transfers electrons to a less electronegative atom.
a metal pulls electrons from another metal and produces a force of attraction.

The mini-refrigerator fire was most likely caused by what type of wiring?

Why does lightning travel from clouds to the ground?

Aparticle of mass m is placed in a one-dimensional box of length l. the box is so small that the particle’s motion is relativistic, so that e p2/2m is not valid. (a) derive an expression for the energy levels of the particle using the relativistic energy–momentum relation and the quantization of momentum that derives from connement. (b) if the particle is an electron in a box of length l 1.00 1012 m, nd its lowest possible kinetic energy. by what percent is the nonrelativistic formula for the energy in error?