Which contribution added to rutherfords discovery of a positive nucleus atoms are invisible electrons are scattered in an atom neutrons are inside the nucleus of An atom atoms of the same element have the same properties

neutrons are inside the nucleus

Explanation:

The most significant contribution that added to Rutherford's discovery of a positive nucleus is that neutrons are also inside the nucleus.

the only liquid elements at standard temperature and pressure are bromine (br) and mercury (hg). although, elements caesium (cs), rubidium (rb), francium (fr) and gallium (ga) become liquid at or just above room temperature.

explanation:

answer; i believe the correct answer is (solid gold);