It took 380,000 years for electrons to be trapped in orbits around nuclei, forming the first atoms.
These were mainly helium and hydrogen, which are still by far the most abundant elements in the universe. Present observations suggest that the first stars formed from clouds of gas around 150–200 million years after the Big Bang. Heavier atoms such as carbon, oxygen and iron, have since been continuously produced in the hearts of stars and catapulted throughout the universe in spectacular stellar explosions called supernovae.
The atomic number of an atom is determined by the number of protons it has..
It is also the whole number shown on the periodic table
Evaporation,condensation,precipitation,sublimation,transpirtation,runoff and infiltration
The density of silver is 10.5 g/cm3.
