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wk 1 questions - WEEK 1 QUESTIONS Electronegativity values...

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WEEK 1 QUESTIONS * Electronegativity values increase ACROSS the table from left to right * Atomic size decreases ACROSS the table from left to right * Electronegativity values decrease DOWN the table from top to bottom * Atomic size increases DOWN the table from top to bottom 1. Valence electrons : the bonding capacity of a given atom usually equals the number of unpaired electrons required to complete the atom’s outermost shell. A) Sulfur = 6 valence electrons B) Phosphorous = 5 valence electrons C) Oxygen = 6 valence electrons D) Nitrogen = 5 valence electrons E) Carbon = 4 valence electrons F) Hydrogen =1 valence electron 2. Covalent bonds : is the sharing of a pair of valence electrons by two atoms. Each atom that can share valence electrons has a bonding capacity corresponding to the number of covalent bonds the atom can form. O2 is a covalent bond. Polar covalent bonds : a covalent bond between atoms that differ in electonegativity Nonpolar covalent bonds : a covalent bond in which electrons are shared equally between 2 atoms with similar electonegativity a) nitrogen b) carbon polar: C c) oxygen 3.
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4. Covalent bonds : is the sharing of a pair of valence electrons by two atoms. Each atom that can
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wk 1 questions - WEEK 1 QUESTIONS Electronegativity values...

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