Html viewer was selected to open .htm files and that would not handle mailto: and other links. This app reset that and then next time I opened the file it asked what app to use and I could select Browser (or Chrome). Perfect. At times, I want to use Chrome to open an .html file that I put on my tablet.
Neutrons have a mass of 1.675 Ã 10-24g, which is a little heavier than the proton. Neutrons are 1839 times heavier than electrons. Like all hadrons, neutrons are made of quarks. A neutron is made of two down quarks and one up quark. One up quark has a charge of +2/3, and the two down quarks each have a charge of -1/3.
Neutrons are the particles of the nucleus that have no charge. All neutrons are identical. Neutrons, with the mass of 1.674928 * 10^-24g, are slightly more massive than protons, but the difference in mass is so small that neutrons are also given an atomic mass of 1 amu. A neutron has slightly more mass than a proton.eutrons are neutral particles. Surrounding the nucleus is a cloud of very small subatomic particles, called electrons. Electrons are negatively-charged particles. But these basic atomic components are by no means the only known subatomic particles.