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ndicate whether each of the following statements about covalent bonds 8 8 Bohr Model 8p 8n 8 io 8 1 A water molecule is held together by two single polar covalent bonds Click to select 2 Because oxygen has a greater electronegativity than hydrogen water molecules are polar with two partial negative charges near the oxygen atom and one partial positive charge near each hydrogen atom Click to select 3 Atoms differ in their affinity for neutrons a property called electronegativity Click to select B 4 In general electronegativity increases from left to right across each row of the periodic table and also increases down each column Click to select 5 In a nonpolar covalent bond there is an equal sharing of electrons between two atoms while polar covalent bonds involve an unequal sharing of electrons Click to select 6 A single molecule of oxygen O is held together by two double nonpolar covalent bonds Click to select 7 A covalent bond is formed when two atoms share one or more pairs of electrons Click to select 8 Polar molecules are electrically neutral but the distribution of charge within the molecule is not uniform Click to select 9 Although C and H differ slightly in electronegativity this small difference is negligible and C H bonds are considered polar Click to select B 10 Of the 4 most common elements found in living organisms nitrogen has the highest electronegativity and therefore the greatest affinity for electrons Click to select B

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