Chemical bonds, ionic, covalent and metallic: แบบฝึกหัด

• a.

  \(-7\)

• b.

  \(+7\)

• c.

  \(+1\)

• d.

  \(-1\)

• a.

  (2, 8, 8)

• b.

  (2, 8, 1)

• c.

  (2, 8, 2)

• d.

  (2, 8)

• a.

  The sharing of three individual electrons between two nitrogen atoms.

• b.

  The sharing of three pairs of electrons between two nitrogen atoms.

• c.

  The attraction between a \(N^{3+}\) ion and three delocalised electrons.

• d.

  The transfer of three electrons from one nitrogen atom to another.

• a.

  \(NH_{3}\), covalent bonding

• b.

  \(AlCl_{3}\), metallic bonding

• c.

  \(CH_{4}\), covalent bonding

• d.

  \(NH_{4}\), ionic bonding

• a.

  A regular arrangement of oppositely charged ions held by strong electrostatic forces.

• b.

  A lattice of atoms held together by the sharing of electron pairs between adjacent nuclei.

• c.

  Small molecules held together by weak intermolecular forces between the atoms.

• d.

  A giant structure of positive ions surrounded by a sea of delocalised electrons.

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