a m²⁺ ion has three electrons in the 3d subshell and is derived from a metal in the first transition metal…
a m²⁺ ion has three electrons in the 3d subshell and is derived from a metal in the first transition metal series. based on the description provided, enter a chemical symbol for what element m might be.
Answer
Explanation:
Step1: Consider electron - configuration of the ion
The ion $M^{2 + }$ has three electrons in the 3d sub - shell, so its electron - configuration is $[Ar]3d^{3}$.
Step2: Determine the electron - configuration of the neutral atom
To get the electron - configuration of the neutral atom $M$, we add 2 electrons to the ion $M^{2+}$. So the electron - configuration of $M$ is $[Ar]3d^{5}4s^{2}$.
Step3: Identify the element
The element with the electron - configuration $[Ar]3d^{5}4s^{2}$ is manganese. The chemical symbol for manganese is Mn.
Answer:
Mn