Samples of the same element are different ions because the number of what varies? neutrons

protons

electrons

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change. when the temperature in a room increases from 25°c to 33°c, changes from a solid to a liquid. in a lab, methane and nitrogen are cooled from -170°c to -200°c. the methane freezes and the nitrogen . when gold is heated to 2,856°c it changes from a liquid to a .

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

What is the percentage of hydrogen in nitrogen trihydride