NURSING ANM AND GNM

NURSING EXAM QUESTIONS

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which end of the water molecule has a slightly positive charge?
A
the oxygen end
B
the hydrogen end
C
both ends are slightly positive
D
neither end is positive
Explanation: 

Detailed explanation-1: -Because oxygen and hydrogen attract the shared electrons unequally, each end of the V-shaped H2O molecule adopts a slightly different charge. The area around the oxygen is somewhat negative compared to the opposite, hydrogen-containing end of the molecule, which is slightly positive.

Detailed explanation-2: -As a result, the water molecule is “polar”, meaning the molecule has an unequal distribution of charge. The oxygen atom pulls the electrons away from the hydrogen atoms resulting in the oxygen atom having a partial negative charge (-) and each hydrogen atom has a partial positive charge (+).

Detailed explanation-3: -Each hydrogen atom in a water molecule has a partial positive charge.

Detailed explanation-4: -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.

Detailed explanation-5: -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.

There is 1 question to complete.