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Protons do not contain electrons. Protons are positively charged, electrons negatively charged.
None. A hydrogen atom has one proton and one electron (no neutron). Removing the electron leads to just a proton, no electrons.
This is a tricky question because of the way it is phrased. Atoms are the most fundamental unit of stable matter and are composed of varying amounts of protons, neutrons and electrons. In neutral atoms, there are as many positively-charged protons in the nucleus as there are negatively-charged electrons. An imbalance between the number of protons and electrons results in a charged ion. The charge is determined by how many more protons (for positively-charged cations) there are than electrons or for how many more electrons (for negatively-charged anions) there are than protons. Neutrons, found in the atom's nucleus, are present in equal or greater quantity than are protons but the relationship between their number and the number of protons is not fixed. The identity of the atom (hydrogen vs. chlorine vs. carbon, etc...) is determined solely by the number of protons present in the nucleus.From all this can you answer your question?
A neutral atom has an equal number of protons and electrons. Protons are positively charged, and electrons are negatively charged. Therefore if you have an ion with a -1 charge, it has one extra electron. So your ion has 85 protons.
The number of electrons should = the number of protons.
Whatever the number of neutrons are in the nucleus is the number of protons. Ex: Neutrons- 4 Protons - 4 Electrons-3 (Which would be an example of a positively charged atom)
Oxygen's atomic number is 8. Thus it has 8 positively charged protons per atom. In order for oxygen to be neutral, it must also have 8 negatively charged electrons in each atom.
Cu2+ has 29 electrons (since copper has 29 protons) and 27 protons, after losing 2 electrons to become a positively charged ion.
A neutral atom has an equal number of protons and electrons. Protons are positively charged, and electrons are negatively charged. Therefore if you have an ion with a -1 charge, it has one extra electron. So your ion has 85 protons.
Sodium's atomic number is 11. Thus, it has 11 protons, all of them being positively charged. In order to be neutral then, an atom of sodium must also have 11 electrons.
If an atom has 23 protons, then it will also have 23 electrons, assuming the atom is neutral. Electrons and protons have equal and opposite charges, so in a neutral atom, the number of protons equals the number of electrons.
All atoms have a positive charge, but the best way to determine a positive charge is to do an experiment. You take something positively charged and put it next to the atom. If it repels, it is positively charged. If it attracts, it is negatively charged.