anion
It means that the atom has more or less electrons than protons, making it either positive (less electrons than proton), or negative (more electrons than protons).
Ion
If you mean an atom with more electrons than protons it is called an ion. More specifically an anion (negatively charged)
The atom will become negatively charged (protons are positive and electrons are negative.)
What do you mean by "normal" atom? There are ions: charged atoms or molecules. It is charged because the number of electrons do not equal the number of protons in the atom or molecule. An atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom. But I think a "normal" atom, would be a neutral one. A neutral atom has the same amount of protons as electrons, therefore have no net charge.
An atom is negative when there are more electrons which gives it that negative charge. An atom is positive when there are less electrons than protons.
The number of electrons in an atom is the same as the number of protons in the nucleus, which is equal to the atomic number of the element. For a neutral atom, the number of electrons also equals the number of protons to balance the positive charge of the nucleus.
Atoms are neutral as long as they contain the same number of protons as electrons. If there are more electrons than protons, the atom has a negative charge. If there are less electrons than protons, the atom has a positive charge.
An ion exists as an atom or a molecule where the total number of protons in the nuclei do not equal the atom/molecule's electrons. An example is Ca2+. It has 2 less electrons than it has protons.
An ion exists as an atom or a molecule where the total number of protons in the nuclei do not equal the atom/molecule's electrons. An example is Ca2+. It has 2 less electrons than it has protons.
The atom will have a charge of +1, since it has 23 protons and 22 electrons. The number of electrons is one less than the number of protons, resulting in a net positive charge.
An ion exists as an atom or a molecule where the total number of protons in the nuclei do not equal the atom/molecule's electrons. An example is Ca2+. It has 2 less electrons than it has protons.