Write the electron configuration for each of the following ions, and determine which ones posses

Write the electron configuration for each of the following...

Key Concepts

Transition Metal Ionization

In transition metals, electrons are typically removed first from the outermost s orbital, even though the s orbital is filled before the d orbitals in the neutral atom configuration. This inversion of the fill order during ionization is important when determining the electron configuration of transition metal ions, as it influences properties such as magnetism, color, and chemical reactivity.

Noble Gas Configuration

A noble gas configuration refers to an electron distribution that is identical to that of a noble gas, resulting in a particularly stable arrangement with a full valence shell. Ions or atoms with such configurations have lower energy and exhibit chemical inertness. Recognizing a noble gas core in an electron configuration helps in understanding trends in reactivity and stability across the periodic table.

Electron Configuration

Electron configuration is the distribution of electrons in the orbitals of an atom or ion. This concept follows the Aufbau principle, which states that electrons fill lower-energy orbitals before higher-energy ones; the Pauli Exclusion Principle, which limits two electrons per orbital with opposite spins; and Hund’s Rule, which maximizes electron spin in degenerate orbitals. Understanding these rules is crucial for determining the ground state electron distributions.

Ions and Electron Count

The concept of ions involves atoms that have gained or lost electrons, resulting in a net electrical charge. To determine the electron configuration of an ion, one starts with the neutral atom's configuration and then either remove electrons (for cations) or add electrons (for anions). The process requires careful consideration of which electrons are removed first, typically the outermost electrons, to obtain the correct configuration.

Transcript

00:01 So the next question is it says we should write the electron configuration for each of the following irons and the timing which one possess mobile gas configuration.

00:10 So we have sr2 plus, we have titanium 2 plus, we have selenium 2 minus, we have nickel 2 plus, and then we have bromine minus, and then we have magnesium 3 plus.

00:31 Okay, so let's go ahead and do this.

00:36 Strontium is the, let's say, i need to grab my periodic table of elements.

00:55 Okay, so, periodic table.

01:25 I think i'm going to get myself a better periodic table, so i will need it.

01:36 Okay, let's zoom in.

01:44 Okay.

01:45 Okay, all right.

01:48 So strontium is the element 38 under pre -electabular.

01:52 So it's in group 2 and if it's lost two electrons, that means that it's the electron configuration will be similar to the nogogas before heat and that's a krypton.

02:08 So it's going to have a krypton core.

02:11 Okay.

02:12 So the next element is titanium 2 plus.

02:15 So it's the 22nd.

02:17 Elements on the periodic table.

02:20 So if it lost two electron, if titanium lost to electron, or from titanium 2 plus, and that means that the electron configuration would be that of calcium, which is the 28th element on the periodic table, and that will be an haggone car, and then it's going to be of 1, 2, 3, 4, h2 configuration.

02:46 Then the next element is selenium 2 minus.

02:50 So selenium is the 34th element on the periodic table.

02:54 And if it gains to electron to form s .e2 minus, then it's going to be 36 elements on the period of table.

03:02 And that's going to be the one that has the cryptic configuration.

03:06 So the next element is nickel 2 plus, or the next species is negative plus...

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