Flourine has an atomic number of 9. You would expect fluorine would like to do which of the following?
give up all seven electrons, acquiring a positive charge
to be nonreactive with other atoms
to accept an electron from another atom, acquiring a negative charge
to give up four of its electrons, acquiring a positive charge
The Correct Answer is C
A. give up all seven electrons, acquiring a positive charge: Fluorine has 7 valence electrons and needs 1 more to complete its outer shell; it’s unlikely to give up 7.
B. to be nonreactive with other atoms: Nonreactive atoms have full outer shells, like noble gases. Fluorine is highly reactive.
C. to accept an electron from another atom, acquiring a negative charge: Fluorine is highly electronegative, so it gains 1 electron, becoming a negative ion (anion).
D. to give up four of its electrons, acquiring a positive charge: Fluorine doesn’t have four valence electrons to give; it wants one more, not to lose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. triglycerides: Triglycerides are stored in fat cells, not a major component of membranes.
B. eicosanoids: These are signaling molecules, not structural components of the plasma membrane.
C. steroids: While cholesterol (a steroid) is present in membranes, it's not the most abundant.
D. phospholipids: The plasma membrane is primarily made of a phospholipid bilayer, forming the main structural framework.
Correct Answer is D
Explanation
A. monosaccharides: Monosaccharides are the building blocks of carbohydrates, not lipids.
B. a glycerol plus three glycogen chains: Glycogen is a polysaccharide, not a component of triglycerides.
C. a glycerol plus three amino acid chains: Amino acids form proteins, not triglycerides.
D. a glycerol plus three fatty acid chains: A triglyceride is made of one glycerol molecule and three fatty acids-this is the primary structure of fats.
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