S for sulfur because the number of protons tells you the atomic number with is 16 and 16 is sulfur. The electrons means it is an ion with two more electrons than protons. The neutrons have no charge but add mass to the element.
sulfur has 16 protons, electrons - protons = charge
S2-
If it has 18 protons, then the element must be argon, and the symbol for argon is Ar.
It is sulphide ion S-2.
This is the sulfide ion, S2-.
This would be a sulfide ion, S2-.
34S-2
-2
17O2-
108Sn+2
Co 2+
20 protons indicate that the particle has an atomic number of 20 and is thus, calcium Ca. Since it has two more protons than it has electrons it must have a charge of 2+. So, the symbol will be Ca2+.
16 protons, and if it isn't an ion ("isn't an ion" means that it has no electric charge), it has 16 electrons. on average, sulfur has 16.065 neutrons, but that's averaged out, so it's a weird number. let's just say most sulfur has 16 neutrons.
17O2-
potassium
108Sn+2
Co 2+
Na+ sodium ion has 11 protons, 12 neutrons and 10 electrons
20 protons indicate that the particle has an atomic number of 20 and is thus, calcium Ca. Since it has two more protons than it has electrons it must have a charge of 2+. So, the symbol will be Ca2+.
P3- has 15 protons, 16 neutrons and 18 electrons.
13 protons and 14 neutrons. The fact that its an ion doesn't change that ... only the number of electrons.
Te2- ion
This is the ion of the isotope Pb-208 (Pb2+).
The atomic number always equals to the number of protons. which in this case, is 20
20 protons and 18 electrons