a b The formula for calcium chloride is CaCl 2 Ca has a charge of 2 with two Cl

A b the formula for calcium chloride is cacl 2 ca has

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a.b.The formula for calcium chloride is CaCl2. Ca has a charge of +2, with two Cl-ions.
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c.Oxygen should have a charge of -2.d.e.f.There should be two electrons from each S atom in each bond. This makes them double bonds, and gives the carbon atom eight valence electrons.
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g.10/14
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Chemistry SCH3U-CLesson 4Key Questions 12 – 13Name: Kristen Pond 1302305012.a.There is a lone pair of electrons around N. This makes the molecule pyramidal and polar.b.It is non-polar.c.There are two lone pairs of electrons around S. This makes the molecule bent and polar.
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d.11/1613.A – Non-polar, covalent molecular substance. It has a very low melting point and is not soluble inwater. B – Polar covalent molecular substance. It has a very low melting point but is soluble in water. C – Ionic substance. It has a very high melting point and is soluble in water.D – Non-polar covalent molecular substance. It has a low melting point and is insoluble in water.E – Polar covalent molecular substance. It has a very low melting point but is soluble in water.F – Ionic substance. It has a very high melting point and is soluble in water.12/12Total for Unit 1: 79/97 = 81%
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