The element with atomic number 24 is chromium, Cr. It therefore has 24 protons in the atom's nucleus. Since it only has 22 electrons, it has lost two electrons (to another atom), thereby incurring a double positive charge. The ion would be Cr2+ with charge +2.
2+
An ion is an atom with a positive (+) or negative (-) charge. This is because the atom has a different amount of electrons than its number of protons (aka atomic number).
It is only possible to state that that an atom with a charge of -2 has two electrons more than it has protons in its nucleus. It is impossible to determine how many protons it has unless you state the specific element in question, and the number of neutrons will depend upon the particular isotope of that element.
The ionic charge of an atom or ion can not be determined from the mass number and atomic number alone, because the ionic charge if any depends on the surplus or deficiency of electrons compared to protons in the atom or ion. Ordinarily, the symbol C-12, with no further modification, indicates a neutral atom, which would have zero ionic charge.
The sulfide ion, S2-.
the charge on a mono-atomic ion is the same as the oxidation number, for a polyatomic ion the charge is the sum of the oxidation numbers of its constituent elements.
This ion will have a charge of -1. The atomic number is the number of protons in the atom's nucleus. A neutral atom will have a number of electrons equal to the atomic number, which is the number of protons in that nucleus. Since you have an extra electron your atom has a negative charge of one electron's worth, or minus one, which is 1.6 x 10-19 coulombs.
The atomic number of the element in the ion, when there is only one such element, and the atomic charge on the ion. For example, in Na+1, the atomic number is 11; this gives the number of protons. The number of electrons is equal to the atomic number minus the charge on the ion, in this instance, 10 electrons. If the sign on the ion is negative, as in O-2, remember that subtracting a negative number is equivalent to adding the positive number of the same magnitude. Thus, oxygen has an atomic number of 8, and 8 - (-2) equals 10 electrons.
Atomic number : 26Atomic mass : 55.845 Net charge : +3
-1.
+1
+1
A fluorine ion with atomic number 9 and 10 electrons has a charge of -1 because it has one extra electron as compared to the number of protons (10-9 = 1). Its symbol is F-.
+1
26
It is the same as the number of protons if it is a neutral atom, or the number of protons plus the charge of the ion. The number of protons is the atomic number of the element.
The charge is 2+.