I

2.6 Electron Orbitals Each orbital holds a maximum of two electrons. The s orbitals have a lower energy level and fill with electrons before the p orbitals do.

2.6 Electron Orbitals Each orbital holds a maximum of two electrons. The s orbitals have a lower energy level and fill with electrons before the p orbitals do.

First shell-

Hydrogen (H)

Nucleus

Electrons occupying the same orbital are shown as pairs.

Hydrogen (H)

Oxygen has six electrons in its outer shell and requires two electrons to achieve stability.

Second shell -<

Third shelH

Electrons occupying the same orbital are shown as pairs.

Oxygen has six electrons in its outer shell and requires two electrons to achieve stability.

Second shell -<

Third shelH

Electron The Outer Shell

Sodium (Na)

Phosphorus (P)

Sulfur (S)

Sodium (Na)

Phosphorus (P)

Sulfur (S)

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Essentials of Human Physiology

Essentials of Human Physiology

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