What is a simple definition of atom, particle, and kinetic?

How are elements arranged in a periodic table

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.