BIOCHEMISTRY
PROPERTIES OF WATER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The atoms in the water molecule are held together by ionic bonds.
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The atoms in the water molecule are held together by covalent bonds.
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The water molecule has a slight negative charge on the “oxygen end” and a slight positive charge on the “hydrogen end.”
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The water molecule has a slight negative charge on the “hydrogen end” and a slight positive charge on the “oxygen end.”
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Detailed explanation-1: -There is no overall charge to a water molecule, but there is a slight positive charge on each hydrogen atom and a slight negative charge on the oxygen atom. Because of these charges, the slightly positive hydrogen atoms repel each other and form the unique shape.
Detailed explanation-2: -Answer. the option 2) is the correct answer..!! Water is a “polar” molecule, meaning that there is an uneven distribution of electron density. Water has a partial negative charge ( ) near the oxygen atom due the unshared pairs of electrons, and partial positive charges ( ) near the hydrogen atoms.
Detailed explanation-3: -Water is a Polar Covalent Molecule The unequal sharing of electrons between the atoms and the unsymmetrical shape of the molecule means that a water molecule has two poles-a positive charge on the hydrogen pole (side) and a negative charge on the oxygen pole (side).
Detailed explanation-4: -So, the statement that explains why water is a polar molecule is statement (B): there is a big difference in electronegativity between hydrogen atoms and oxygen atoms.
Detailed explanation-5: -Polarity: Although the net charge of a water molecule is zero, water is polar because of its shape. The hydrogen ends of the molecule are positive and the oxygen end is negative. This causes water molecules to attract each other and other polar molecules.