Why is the electronic stucture written as 1s 2s 2p 3s 3p 4s. ... ?

Which other elements contain the same number of outer electrons as sodium

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d

What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added