Question

please fill in the missing information with regards to the description of the metal.
description
a metal ion with a net charge of +4 and 1 electron in the 3d shell.
noble gas core electron configuration of the neutral atom
chemical symbol of the metal
name of the metal

Explanation:

Step1: Determine the electron - configuration of the ion

A metal ion with a + 4 charge and 1 electron in the 3d shell. For a transition - metal ion with a + 4 charge, we work backward to find the neutral atom's electron - configuration. A + 4 ion means 4 electrons are removed. Since the ion has 1 electron in the 3d shell, the neutral atom would have 5 electrons in the 3d shell and 2 electrons in the 4s shell (because electrons are removed first from the 4s orbital for transition metals when forming cations). The noble - gas core before 3d and 4s is Ar. So the noble - gas core electron configuration of the neutral atom is $[Ar]3d^{5}4s^{2}$.

Step2: Identify the element

Using the electron - configuration $[Ar]3d^{5}4s^{2}$, we can find the element on the periodic table. The total number of electrons in the neutral atom is 18 (from Ar) + 5 (in 3d) + 2 (in 4s)=25. The element with 25 electrons is manganese, with the chemical symbol Mn.

Answer:

Noble Gas Core Electron Configuration of the Neutral Atom: $[Ar]3d^{5}4s^{2}$; Chemical Symbol of the Metal: Mn; Name of the Metal: Manganese