Atoms are not a a relatively new idea to us b the building blocks of all matter c the smallest particles into which and element can be divided and still be the substance d seen with the scanning tunneling microscopes

It would be c because there are three smaller ones called quarks gluons electrons and neutrinos. hoped i helped

The correct answer should be A because they aren't a new idea to us.

B is incorrect because they ARE the building blocks of matter.
C is also incorrect because the Atom is the smallest part of matter.

Hope this is the correct answer and helps! =)

30litre of li2o is 1.0002mole approximately 1 mole