Many people believe that the atomic number of the atom is the number of electrons in the atom. describe when this is the case. a) as the atom absorbs photons the electrons excite and produce unique emission spectrum. b) through radioactive decay the electrons and neutrons form unique atomic number isotopes. c) when the atom is neutral and the number of electrons and the number of protons are equal. d) whether the atom is neutral or charged the number of electrons is always a unique identifier.

The number of electrons in an atom is the same as the atomic number

C) when the atom is neutral, and the number of electrons equals the number of protons.

The number of electrons is never a unique identifier of an atom (it’s the number of protons!).

Thus, electronic excitation and radioactive decay are also incorrect options.

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

i believe it is c.) 1575 j.