Question

What is the symbol for an ion with 16 protons, 18 neutrons, and 18 electrons? What is the symbol for an ion that has 16 protons, 16 neutrons, and 18 electrons?

Short answer

The ion and symbol are sulfur ion ${}_{16}{}^{34}{\mathrm{S}}^{2-}\&{}_{16}{}^{32}{\mathrm{S}}^{2-}.$

Step-by-step solution

Symbol for an ion with 16 protons, 18 neutrons, and 18 electrons

Sulphur has proton number of 16 and 18 electrons.

Mass number = Number of protons + Number of neutrons

$\begin{array}{l}=18+16\\ =34\end{array}$

Atomic symbol of Sulfur ion is$\left({}_{16}{}^{34}{\mathrm{S}}^{2-}\right).$

$\left({}_{16}{}^{34}{\mathrm{S}}^{2-}\right).$

Symbol for an ion with 16 protons, 16 neutrons, and 18 electrons

Sulphur has proton number of 16 and 18 electrons.

Mass number = Number of protons + Number of neutrons

$\begin{array}{l}=16+16\\ =32\end{array}$

Atomic symbol of Sulfur ion is$\left({}_{16}{}^{32}{\mathrm{S}}^{2-}\right).$

Conclusion of ion and symbol

The ion and symbol are sulfur ion ${}_{16}{}^{34}{\mathrm{S}}^{2-}\&{}_{16}{}^{32}{\mathrm{S}}^{2-}.$