4.7e^6 is how I would write it. You simply count in from the right side where the decimal is until you reach the point just before the 4.
The elements on the periodic table are listed in increasing atomic number.
Hydrogen is the first element, and has an A.N. of 1. Also, its very interesting how it doesn't need 8 valence electrons to be stable.
The second element is Helium, which has an A.N (atomic number) of two.
A Method of procedure that has characterized natural science in include systematic observation, measurement, and experiment
it also include the formation, testing, and modification of hypothesis
i hope it helps out