What does it mean to be in accurate measurement

Theoretically, which metal should be the most reactive? hydrogen lithium francium fluorine

When the volume and number of particles of a gas are constant which of the following is also constant

Write a brief passage describing a neutral atom of nitrogen-14 (n-14). describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located, and how the terms atomic number, mass number, and atomic mass are related to the particles. use the periodic table to you. 14 protons and eletrons since its a neutral atom