CHEMICAL BONDING QUESTIONS

Basic Competencies:

1.2. Comparing the process of ionic bonding, covalent bonding, coordination bonding, and metallic bonding and its relationship with the physical properties of compounds formed.

1. Arrangement of valence electrons in the noble gases below is an octet, except ....
a. Xe                           d. Ne
b. Kr                            e. He
c. Ar
2. The element with the electron configuration of 2 8 18 2, if it will bind other elements to form a bond, the best move with ....
a. Release 1 electrons so charged +1
b. Release 2 electrons so that the charged +2
c. Arrest 1 electron so that the charged -1
d. Arrest 2 eletron so charged -2
e. Pair 2 electrons with two other electrons
3. Elements that tend to pair of valence electrons is .....
a. IA class                              d. VIA group
b. IIA class                  e. IVA group
c. VIIA group
4. Tendency of positively charged atoms due ....
a. large electron affinity
b. small ionization energy
c. Large electronegativity
d. Large ionization potential
e. Moderately electropositivity
5. Bonds between the atoms are highly electropositive with strongly electronegative atom is called .....
a. Ion              c. Dative                     e. Semipolar
b. Covalent    d. Duplicate
6. Known for some elements with atomic numbers as follows: ₉X, ₁₁y, _16Z, 19A, 20B. Couple elements that can form ionic bonds are ....
a. A and X                             d. B and A
b. A and Y                             e. B and Y
c. A and Z
7. A compound known to the data as follows:
1. ion binds
2. bonding formula XCl₂
3. when dissolved in water conduct electricity
From these data X is an element of class ....
a. IA                            c. IIIA e. VIIIA
b. IIA               d. VIIA
8. X element with atomic number 19 the Y element atomic number 16, will form a compound with the chemical formula and bond ....
a. ion, XY                   d. covalent, XY
b. ion, X₂y                  e. covalent, X₂y
c. ion, XY₂
9. An element with the electron configuration of 2 8 6 ....
a. can form ionic compounds with sodium
b. a metallic element
c. can form ion with a charge of 2 +
d. can only react with non-metals
e. with 6 protons in each atom.
10. This group of compounds under ion is bonded entirely .....
a. CaCl₂, CaO, H₂O, and N₂O₅
b. MgCl₂, SrO, NO₂, and SO₂
c. KCl, CaO, NaCl, and MgCl₂
d. KCl, NaCl, SrCl₂, and PCl₅
e. BaCl₂, CaCl₂, SrCl₂, and SF₆
11. Below are the physical properties of ionic compounds, except ....
a. has a high melting point
b. have a high boiling point
c. in the liquid phase can deliver electricity
d. sparingly soluble in water solvent
e. hard, but brittle.
12. Pair element below which have a tendency covalent bond is ...
a. sodium and oxygen
b. sulfur and chlorine
c. potassium and chlorine
d. barium and fluorine
e. magnesium and oxygen.
13. This group of compounds under which all covalent bonds are .....
a. Cl₂O₇, CO₂, HCl, NaCl
b. SO₂, SO₃, CH₄, CaCl₂
c. N₂O₃, N₂O₅, C₂H₂, SO₃
d. H₂O, HCl, SF₆, KCl
e. NH₃, NO₂, CO, MgCl₂
14. The compounds below contain covalent bonds in 2, except .....
a. CO₂                        d. SO₃
b. C₂H₄                       e. PH₃
c. SO₂
15. Depending on the polarity of a covalent compound of ......
a. the number of electrons on the central atom
b. difference in dipole moment between the atoms making up the compound
c. attractive force between atoms
d. potential between two atoms
e. ionization potential between the two atoms making up the compound
16. The following is a metallic properties related to bonding occurs in metals, namely...
a. electrical and thermal conductivity of metals is very good.
b. the density of the metal is very large and loud
c. metal easy release of valence electrons
d. easily form ionic bonds with non-metals
e. boiling point and high melting point metals
17. which of the following materials that can conduct electricity through the movement of the ions?
a. NaCl solution d. copper metal
b. mercury e. molten lead
c. graphite
18. Polar or nonpolar molecule depends on .....
 a. symmetrical or not inter-atom positions
b. round or not the position of the atom
c. oblong or not the position of the atom
d. round or oval positions between atoms
e. or no overlap between the atomic positions
19.Jika electronegativity H, Br, and F, respectively 2.1; 2.8, and 4.0, which of the following series of compounds are arranged by decreasing order of polarity?
a. BrF, HF, HBr
b. HF, BrF, HBr
c. BrF, HBr, HF
d. HF, HBr, BrF
e. HBr, BrF, HF
20. The following compounds have covalent iakatan is .....
a. sodium chloride
b. magnesia
c. calcium fluoride
d. calcium oxide
e. carbon tetra chloride 

 SCORING GUIDELINES AND ANSWERS TO QUESTIONS OBJECTIVE

1. E                                             11. D
2. B                                             12.B               
3. E                                             13.C
4. B                                             14.E
5. A                                             15.B
6. C                                             16.A
7. B                                             17.A
8. B                                             18A
9. A                                             19.D
10. C                                             20.E

Score for correct answer = 1
Scores for wrong answers = 0
Scores that students achieved scores of correct answers =

Σ Score for correct answer x 100

                   20