Cations donate electrons from their valance shell, have less, to reach their octet state.
Anions accept electrons into their valance shell, have more, to reach their octet state.
Actually all the ions will have. Al3+, O2- and N3- ions will have the same number of electrons as neon (10 electrons), whereas Br- ion will have the same number of electrons as krypton (36 electrons)
Electrons.
The number of electrons does not equal the number of protons.
This is not a general valid rule; ions have a different number of electrons.
Charged atoms of elements that have an unequal number of protons and electrons are called ions.. A perfect example of this is H+, which is a hydrogen with one less electron than normal. In other words, H+ is a single proton, with no electrons.
Ions have electronic charge. As ions are molecules or atoms with a different number of electrons(-1) to protons(+1) a positive ion has less electrons, and a negative ion has more
Ions.
In every element the number of protons in an atom is equal to the number of electrons in it. But in the ions there is loss or gain of electrons. But the ions and the atoms are not same . Ions are formed from atoms. In the case of radio active disintegration the number of protons changes . Even after the radio active decay they exist in ionic form. So far as the question is concerned we cannot say that an atom exists in which the number of protons is different from that of electrons.
To maintain the neutrality of an atom the number of neutrons must be equal to number of electrons; in ions this number is not equal.
Ions are formed when an atom gains or loses electrons and gets charged. If an atom gains electrons, number of electrons exceed from the number of proton and hence an atom gets negatively charged. Similarly if an atom looses electrons the total number of protons become more than the number of electrons.. and the atom becomes positively charged.
Ions that are deficient in electrons are
In stable atoms, number of protons = number of electrons. In positively-charged ions, number of protons = number of electrons + charge of the ion. In negatively-charged ions, number of protons = number of electrons - charge of the ion. Hope this helped! NO THATS A COMPLETE LIE. all you have to do is split the atom and look inside of it.