A bromine ion with only 26 electrons is not possible.
A bromine atom has 35 electrons and it can't loose 9 electrons.
Ion 2+=====
A nickel ion with a +2 charge has lost 2 electrons. Since the atomic number of nickel is 28 and it is now a +2 ion, it has 26 electrons remaining (28 - 2 = 26).
+2: 26 - 24.
The N3 ion has 26 electrons. Each nitrogen atom contributes 7 valence electrons, and there are three nitrogen atoms in the N3 ion.
An atomic number of 28 implies that a neutrally charged atom would have 28 electrons. If it has a positive charge of +2 then that would imply the ion was deficient by 2 electrons - hence a total of 28-2 = 26 electrons.
The iron III ion, 56Fe3+, has 26 protons, 30 neutrons, and 23 electrons. This is derived by considering the atomic number of iron (26) along with the charge of +3, which means it has lost 3 electrons.
An ion of (^{56}\text{Fe}^{3+}) consists of a nucleus containing 26 protons and 30 neutrons, giving it a mass number of 56. The "3+" charge indicates that it has lost three electrons, resulting in a total of 23 electrons. This loss of electrons gives the ion a positive charge, making it an iron cation.
Elemental iron has atomic No. of 26. This means it has 26(+) protons and 26(-) electrons. When it becomes the caion 'Fe^(2+)' it has lost(ionised) two electrons. So the ion contains 26(+) protons and 24(-) electrons . Doing a little sum (+)26 - 24 = (+)2. Hence the charge is '+2' and the ion is described as 'Fe^(2+)'
Nickel has an atomic number of 28- so if there aare only 26 electrons - 2 are missing and the ion will have a harge of 2+.
Iron (II) refers to the iron ion with a +2 charge, meaning it has lost two electrons compared to its neutral state. A neutral iron atom has 26 electrons, so an iron (II) ion has 24 electrons. Therefore, iron (II) contains 24 electrons.
An ion of copper, Cu+2, has 27 electrons and a charge of +2. The copper atom has loaned out (or had borrowed from it) in a chemical reaction, those 2 electrons. An ion is formed any time the number of electrons an atom has does not equal the number of protons in its nucleus. The 2 electrons plus 27 electrons makes 29 electrons - just the number that are present in a neutral atom of copper.
One iron(III) ion has 26 protons. The atomic number of iron is 26, and the Roman numeral "III" indicates that the ion has a +3 charge, which means it has lost 3 electrons and retained its 26 protons.