Earth Mobiles, as Explained by Professor Xargle: 2 by Jeanne Willis

By Jeanne Willis

Professor Xargle, the infamous alien who's discovered within the methods of the planet Earth, discusses the stinkfumers that crowd the highways, the featherless silver flyingbird, and different fine details of Earth commute.

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Ionic bonds also form when group IIA and group VIA elements combine. In the mineral periclase (MgO), magnesium (Mg+2) and oxygen (O−2) ions are bonded together to form MgO. In this case, electropositive, metallic magnesium atoms from group IIA tend to donate two valence electrons to become stable, smaller divalent magnesium cations (Mg+2) while highly electronegative, nonmetallic oxygen atoms from group VIA capture two valence electrons to become stable, larger divalent oxygen anions (O−2). 11 The relationship between attractive and repulsive forces between ions produces a minimum net force when the near spherical surfaces of the ions are in contact.

In such situations, each atom releases valence electrons to achieve a stable electron configuration. The positions of the valence electrons fluctuate or migrate between atoms. 14). The weak attractive forces between positive partial atoms and valence electrons bond the atoms together. Unlike the strong electron-sharing bonds of covalently bonded substances, or the sometimes strong electrostatic bonds of ionically bonded substances, metallic bonds are rather weak, less permanent and easily broken and reformed.

B) Ions of opposite charge attract to form crystals such as sodium chloride (NaCl). them that results from their opposite charges. Larger clusters of ions form as additional ions exchange electrons and are bonded and crystals begin to grow. 10). 0). Sodium has a strong tendency to give up one electron to achieve a stable electron configuration. 5). It has a strong tendency to gain one electron to achieve a stable electron configuration. When sodium and chlorine atoms bond, the sodium atoms release one electron to become smaller sodium cations (Na+1) with the “stable octet” electron configuration (neon), while the chlorine atoms capture one electron to become larger chloride anions (Cl−1) with “stable octet” electron configurations.

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