Question

Explain Rutherford's experiement For atoms and its structures..... My friend needs help in this question....

Also explain Why atoms are electrically neutral?

Answer 1

Answer:

Rutherford used gold foil experiment by dropping Alpha particles into the gold foil and some where deflected when some hit the nucleus and came back it was very amazing and he observed that atoms of the higher amount of concentration in an atom is stored in the nucleus.

Answer 2

Rutherford atomic model, nuclear atom, or planetary model of the atom, description of the structure of atoms. The model described the atom as a tiny, dense, positively charged core called a nucleus, in which nearly all the mass is concentrated, around which the light, negative constituents, called electrons, circulate at some distance.

The nucleus was postulated as small and dense to account for the scattering of alpha particles from thin gold foil, as observed in a series of experiments by him. As during the experiment most of the alpha particles passed through the gold foil, which implied that atoms are composed of free space. Some alpha particles were deflected slightly, suggesting interactions with other positively charged particles within the atom. Still other alpha particles were scattered at large angles, while a very few even bounced back towards the source. Only a positively charged and relatively heavy target particle, such as the proposed nucleus, could account for such strong repulsion.

Atoms are electrically neutral because they contain equal numbers of protons and electrons.An atomic nucleus is made of two kinds of particles, protons and neutrons. A proton has a positive charge and a neutron is electrically neutral. The atomic nucleus is surrounded by negatively charged particles called electrons.

A proton with positive charge is equal in magnitude to the negative charge of an electron, hence atom is neutral.