What occurs during a solar elcipse

A solar eclipse happens when the moon moves in front of the Sun as seen from a location on Earth. During a solar eclipse, it gets dimer and dimmer outside as more and more of the Sun is covered by the Moon. During a total eclipse, the entire Sun is covered for a few minutes and it becomes very dark outside. The temperature outside also drops.

A potassium atom loses (electrons) to form K⁺ ions

A sulfur atom gain (electrons) to form S²⁻ ions

Atoms have different stability. Unstable atomic atoms will try to form stable electron configurations like those of noble gases. Where noble has the number of outer electrons 2 or 8

The formation of electron configurations can be done by forming shared ions or electron pairs

atoms that have low ionization energy (easily release electrons) forms cations, and these electrons are bound to have large affinity energy (easily pulling electrons) that form anions

Metal elements have low ionization energy and non-metallic elements have a high electron affinity

The location of the element group is the number of valence electrons that fill the last sub-skin

The element period is determined from the valence shell (the largest main quantum number (n))

The chemical element of the group is divided into two, namely:

Group A, occupies sub skin and p

Group B, sub skin occupies d

The electron configuration of noble gases is:

He: 1s²

Ne: [He] 2s² 2p⁶

Ar: [Ne] 3s² 3p⁶

Cr: [Ar] 3d¹⁰ 4s² 4p⁶

Let's look at the statement

Electron configuration

[Ar] 4s¹

The K element is closestto the configuration of the Ar element releasing 1 electron to be stable, becoming K⁺

Electron configuration

[Ne] 3s² 3p⁴

The S element is closest to the configuration of the Ar element by binding 2 electrons to be stable, becoming S²⁻

the chemical bond holds the Na⁺ and Cl⁻ ions

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Identify the group number

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ionic bonding

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Keywords: noble gas, stable, electron configuration