Halalhal (S
the mass
of Naott with Concent-
ration of O. I moldm3
Present in 250cm soh​

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

what is the question here. i think you messed up.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter