The symbol for this ion is As3-. The charge is 3- because there are three more electrons than protons.
As3- The arsenide ion
This is arsenic - As(3-).
This is the ion Se(2-).
As - - -
As3-
+2
It would end up answering with Cobalt = Co. Because the protons stay the same and add the protons and electrons together equaling 59. So (Co+2) would be the final answer.
Ti2- would be the symbol for an ion with 22 protons and 24 electrons. This would be EXTREMELY unlikely to exist though. Ti2+ is more usual with 22 protons and 20 electrons. Ti4+ is even more stable with 22 protons and 18 electrons.
Look at the periodic table. You see that the element that has 16 protons is Sulfur. Electrons have a single negative charge, while protons have a single positive charge, so an ion with 2 more electrons than protons will have a charge of 2-. So, the symbol of the ion would be S2- .
The atomic number is determined by the number of protons, so the base element is tungsten. The net charge is the number of protons minus the number of electrons, so the overall symbol is W with a 6+ superscript.
There are 8 protons and 10 electrons in an oxide ion.
The chemical symbol is Cu2+.
Cl-
According to the periodic table the ion with 28 protons and 30 electrons, the chemical sybol is Ni-58
Co 2+
Magnesium, with a +2 charge.
This ion has 16 protons and 18 electrons.
K
17O2-
It would end up answering with Cobalt = Co. Because the protons stay the same and add the protons and electrons together equaling 59. So (Co+2) would be the final answer.
Ti2- would be the symbol for an ion with 22 protons and 24 electrons. This would be EXTREMELY unlikely to exist though. Ti2+ is more usual with 22 protons and 20 electrons. Ti4+ is even more stable with 22 protons and 18 electrons.
Look at the periodic table. You see that the element that has 16 protons is Sulfur. Electrons have a single negative charge, while protons have a single positive charge, so an ion with 2 more electrons than protons will have a charge of 2-. So, the symbol of the ion would be S2- .
find the difference between the number of electrons and protons, and then find whether protons(+) or electrons(-) are more abundant. if the difference was 2, for example, and there were (2) more protons than electrons, the charge would be written as: chemical symbol 2+