Which two particles in an atom have the same mass ? protons and electrons or protons and neutrons

Each of the following compounds contains a metal that can exhibit more than one ionic charge. provide systematic names for each of these compounds. (a) cr(clo3)6 (b) mo(cn)6 (c) cr2(so3)3 (d) v(clo2)2 (e) v(cn)5 (f) os(clo2)4

Why are people not able to scuba dive in the deep part of the ocean

What type of electromagnetic radiation has a shorter wavelength than blue light