Loveliveserve

The model of the atom has changed as scientists have gathered new evidence. Four models of the atom are shown below, but one important model is missing. I don't understand.... ) :

( A)An atom can join with other kinds of atoms. (B)Dalton’s model (D)an atom is made up of electrons in a sea of positive charges. (A)Bohr’s work with atomic spectra led him to say that the electrons were limited to existing in certain energy levels, like...

My questions and answers the same as the presidents.