Beryllium has two electrons on its outer most shell and a total of two shells. The number of electrons present in an atom of this element is: 1 point 2 4 5 6

A.

The question is incomplete. complete question is attached belowanswer: correct answer is option b  i.e.  solid particles  reason: filter paper has small pores, through which smaller particles can pass through. however, solid particles  have relatively larger size. hence, they are least likely to pass through.

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