The discovery of the electron proved the positive charge of the atom when sending an electric spark across an air gap from one electrode to another, called the photoelectric effect.
They lose electrons.
The Rutherford model was the model that showed the discovery of a positively charged nucleus. In this model, proposed by Ernest Rutherford in 1911, he suggested that atoms have a dense, positively charged nucleus at the center, with electrons orbiting around it. This model provided evidence for the nuclear nature of the atom.
An atom becomes a positively charged ion when it loses one or more electrons.
The discovery of electrons through cathode ray experiments by J.J. Thomson demonstrated the existence of negatively charged particles. It raised the question of what positively charged particles balanced the charge in an atom. Subsequent experiments, like the gold foil experiment by Rutherford, led to the discovery of the atomic nucleus containing positively charged protons, thereby revealing the existence of both negatively and positively charged components within an atom.
One! An atom is not made up of other atoms, but has a nucleus of a positively-charged proton and a neutrally-charged neutron. It is surrounded by a network of positively-charged particles called electrons. (sorry, NEGATIVELY charged particles called electrons!)
atoms in metallic bonds are positively charged due to stable configuration as the extra electrons are either donated to another atom or atom completes it last shell by receiving electrons which makes it positively charged.
Atoms lose electrons to form positively charged cations.
No - atoms are always neutral. The number of protons is balanced by a equal number of electrons. Ions, on the other hand, may be positively or negatively charged, depending on whether they have lost or gained electrons.
atoms are made up of positively charged protons, negatively charged electrons and electrically neutral neutrons
If atoms lose electrons they will have a positively charged ion called a cation. If they gain electrons, they will have a negatively charged ion called an anion.
If atoms gain electrons, negatively charged anions are formed. If atoms lose electrons, positively charged cations are formed.
The discovery of electrons by J.J. Thomson provided evidence for the existence of positively charged particles in the atom because atoms were found to be electrically neutral overall. Thomson's experiments with cathode rays showed that electrons carried a negative charge, leading to the conclusion that there must be positively charged particles in the atom to balance the negative charge of the electrons.