Added:
I would think Neils Bohr here.
Clarification: I think it was Rutherford. Bohr's work came after the "Rutherford Model".
There are many places to read about this, eg Wikipedia " Rutherford Model".
Certainly Bohr refined the Rutherford Model even before his quantum ideas for the hydrogen atom. That's why the "planetary model" is sometimes called the "Rutherford-Bohr Model."
atomic theory of matter
The central part of an atom is called the nucleus. Which contains electrons, protons and neutrons.
dalton
The Nucleus.
an atom consists of a central nucleus of protons and neutrons with electrons moving around it some distance away.
An atom is composed of a central nucleus containing a varying number of protons and neutrons, and electrons, which orbit the nucleus in shells. The majority of an atoms volume comes from the space between the central nucleus and the surrounding electrons.
the bohr model
electrons in orbit about a nucleus of protons and neutrons
The movement of electrons around the nucleus has been described as orbits ( Bohr molecule) probability cloud (Schroedinger model), electrons being in orbitals
Rutherford concluded that they have a nucleus,a central positive nucleus surrounded by negative orbiting electrons.
The central part of an atom is called the nucleus. Which contains electrons, protons and neutrons.
dalton
The atom is a basic unit of matter that consists of a dense central nucleus surrounded by a cloud of negatively charged electrons. The atomic nucleus contains a mix of positively charged protons and electrically neutral neutrons. The electrons of an atom are bound to the nucleus by the electromagnetic force
The Nucleus.
you will need to know how many protons, neutrons and electrons your vanadium atom has. The nucleus, the central part of the atom, all of your atom's protons and neutrons go in the nucleus, The electrons are found outside the nucleus. Depending on which model of atomic structure (Planetary Model, Bohr Model) your are studying your electrons will be placed.
Structure of the AtomThe atom consists of a central, positively charged core, the nucleus , and negatively charged particles called electrons that are found in orbits aka in motion around the nucleus.
Eukaryotic
the nucleus is surrounded by electrons, protons and neutrons. Inside the nucleus are quarks. (for the nucleus in an atom only)