NURSING EXAM QUESTIONS
HUMAN ANATOMY PHYSIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Nonpolar molecule
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Ionic molecule
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Covalent molecule
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Polar molecule
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Detailed explanation-1: -A polar covalent bond is a covalent bond in which the atoms have an unequal attraction for electrons and so the sharing is unequal. In a polar covalent bond, sometimes simply called a polar bond, the distribution of electrons around the molecule is no longer symmetrical.
Detailed explanation-2: -Water has a polar structure as the distribution of electric charge is asymmetrically distributed (Figure 3-3).
Detailed explanation-3: -Propane is nonpolar, because it is symmetric, with H atoms bonded to every side around the central atoms and no unshared pairs of electrons.
Detailed explanation-4: -Water is a polar molecule because of the uneven distribution of electrons and therefore charge across the molecules shape. Opposite sides of the molecule have opposite charges.