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Acknowledgement

Acknowledgement. This is an adaptation of a presentation originally prepared by Mrs. Christy Johannesonn. I wish to thank Mrs. Johannesonn for sharing her work with teachers and students via her website. Covalent Bonds. Valence electrons shared between two atoms.

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Acknowledgement

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  1. Acknowledgement • This is an adaptation of a presentation originally prepared by Mrs. Christy Johannesonn. I wish to thank Mrs. Johannesonn for sharing her work with teachers and students via her website.

  2. Covalent Bonds • Valence electrons shared between two atoms. • Atoms may be of the same element or different non-metal elements. • Covalently bonded atoms form molecules

  3. Molecular Formulas • Diatomic Elements: H2, O2, N2, F2, Cl2, Br2, I2 a.k.a. Group 17, HON! • Compounds: non-metals

  4. Molecules molecule of a diatomic element molecular compounds

  5. Naming Binary Molecular Compounds • Write the names of both elements. • Change the final ending to -ide. • Add prefixes to indicate subscripts. • Don’t use mono- prefix if there’s only one of • the first element

  6. PREFIX mono- di- tri- tetra- penta- hexa- SUBSCRIPT 1 2 3 4 5 6 Prefixes (on back of table)

  7. Molecular Names • CCl4 • N2O • SF6 • carbon tetrachloride • dinitrogen monoxide • sulfur hexafluoride

  8. Molecular Formulas • Write the more metallic element first. • Add subscripts according to prefixes.

  9. Molecular Formulas • phosphorus trichloride • dinitrogen pentoxide • dihydrogen monoxide • PCl3 • N2O5 • H2O

  10. Molecular Element Formulas • The Seven Diatomic Elements H2 O2 N2 F2 Cl2 Br2 I2

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