If the charge on the atom is zero, then the number of electrons is equal to the atomic number.
e.g. 126C : atomic number = 6. This means there are 6 protons in the nucleus of the atom. There is no charge on the atom, so number of electrons must equal number of protons to cancel charge (6 electrons).
The core charge of an atom is determined by subtracting the number of core electrons from the number of protons in the nucleus of the atom. Since core electrons are those in the inner energy levels, the core charge is important in understanding the chemical behavior of an atom.
The number of electrons should be the same amount as the protons if there is neutral charge
The number of protons in an atom is equal to its atomic number. In a neutral atom, the number of electrons is equal to that of protons. If the atom is negatively charged, add it to the number of electrons; and if positive, subtract.
The number of protons in an atom is equivalent to its atomic number, which is located on the periodic table. Atoms are neutral and thus have an equal number of protons and electrons, so the number of electrons is also the same as the atomic number.
An atom with an atomic number of 20 has 20 electrons. The number of electrons in an atom is equal to its atomic number.
Look at its atomic number in a periodic table.
A neutral atom of uranium has 92 electrons. This is because the number of electrons is equal to the number of protons in the nucleus of an atom, and an atom is neutral when the number of electrons is equal to the number of protons. Uranium has an atomic number of 92, which corresponds to the number of protons and electrons in a neutral atom of uranium.
The atomic number is the number of protons and therefore, assuming the atom is neutral, the number of electrons. You would need to additionally know the atomic mass to figure out the number of neutrons.
The number of electrons should equal the number of protons, otherwise you have an ion.
The number of protons is equal to atomic number; in a neutral atom the number of electrons is also equal to the numbers of protons.
The atomic number of an element can be used to determine the number of electrons in an atom. It is equal to the number of protons in the nucleus of an atom, which also corresponds to the number of electrons in a neutral atom.
An atom with atomic number 8 corresponds to oxygen. Oxygen has 8 electrons because the number of electrons in an atom is equal to its atomic number.