Filtration is the process in which a solid is removed from a liquid. true/false

What elements have 2 electrons inthe 4s sublevel

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?