Bonding MC Practice 1
1. Atom M whose electronegativity is 1.0 combines with
atom N whose electronegativity is 3.5. Which diagram
best represents the combination?
A) M – N+
C) M – N
E) M –N–
7. Base your answer to the following question on
B) M + N–
D) M:N
2. Which of the following has the shortest bond length?
A) H–H
B) O=O
C) C–C
D) C=C
E) C C
3. The conductivity, ductility, luster, and malleability of
metals is explained by
A)
B)
C)
D)
E)
mobile electrons
localized electrons
equally shared electron pairs
unequally shared electron pairs
high reactivity
Which substance is an ionic solid?
A) I
C) III
E) None of the above
B) II
D) IV
8. Which substance is a metal?
4. Which of the following molecules is nonpolar?
A) H2O
C) CO 2
E) CO
B) NH 3
D) CHCl 3
5. What forces or bonds hold the two oxygen atoms
together in a molecule of O 2 ?
A)
B)
C)
D)
E)
ionic bonds
metallic bonds
nonpolar covalent bonds
Van der Waals forces
coordinate covalent bonds
6. The electronegativity is 3.0 for chlorine, and 2.4 for
iodine. What is the nature of the bonding in ICl?
A) 50% ionic
C) Pure covalent
E) Nonpolar covalent
B) Pure ionic
D) Polar covalent
A) I
C) III
E) None of the above
B) II
D) IV
9. The bond in HCl is polar covalent because the
A) shared electrons are closer to the chlorine atom.
B) chlorine has a higher atomic number than hydrogen.
C) hydrogen chloride molecules are weakly held
together.
D) chemical bonds consist of electrical forces between
atoms.
E) shared electrons are closer to the hydrogen atom.
10. Which compound exhibits the least ionic character?
A) MgO B) NO
C) NaCl D) RbS
E) CaO