بناتي الجبيبات
لكم منى أجمل و أصدق الدعوات
الله ينور عليكم
ويفتح عليكم فتوح العارفين
ويكون الامتحان والنتيجة أحسن مما تظنوا
ان شاء الله
Tuesday, 19 May 2015
some end of chapter questions from Chapter 9
2.
|
According to the Lewis dot symbol, the number of electrons in the outermost shell of gallium is _____.
| |
A)
|
2
| |
B)
|
4
| |
C)
|
5
| |
D)
|
3
| |
3.
|
The element having five electrons in the valence shell is _____.
| |
A)
|
Al
| |
B)
|
N
| |
C)
|
S
| |
D)
|
Se
| |
4.
|
The element not having seven electrons in the outermost shell is _____.
| |
A)
|
Cl
| |
B)
|
At
| |
C)
|
F
| |
D)
|
Tl
| |
6.
|
The ion not having Octet configuration in the outermost shell is _____.
| |
A)
|
Sr2+
| |
B)
|
Fe2+
| |
C)
|
Mg2+
| |
D)
|
S2–
| |
7.
|
Al3+ is not isoelectronic with _____.
| |
A)
|
Mg2+
| |
B)
|
F–
| |
C)
|
Na+
| |
D)
|
Ca2+
| |
8.
|
The most stable ion of the following is _____.
| |
A)
|
O–
| |
B)
|
Bi3+
| |
C)
|
Si3+
| |
D)
|
Hg3+
| |
11.
|
An ionic compound of the following is _____.
| |
A)
|
MgO
| |
B)
|
Cl2O7
| |
C)
|
NO
| |
D)
|
SiO2
| |
18.
|
Which of the following will form an ionic compound?
| |
A)
|
Mg and F
| |
B)
|
Si and O
| |
C)
|
C and O
| |
D)
|
Cl and O
| |
19.
|
Which of the following will form a covalent compound?
| |
A)
|
Mg and I
| |
B)
|
B and F
| |
C)
|
Cs and F
| |
D)
|
Ba and Cl
| |
28.
|
Which of the following compounds contains a lone pair of electrons?
| |
A)
|
BH3
| |
B)
|
NH3
| |
C)
|
CH4
| |
D)
|
AlH3
| |
29.
|
How many lone pairs are there at bromine in HBr?
| |
A)
|
6
| |
B)
|
1
| |
C)
|
2
| |
D)
|
3
| |
30.
|
The molecule containing two lone pairs of electrons is _____.
| |
A)
|
PH3
| |
B)
|
H2S
| |
C)
|
HCl
| |
D)
|
BH3
| |
31.
|
The molecule containing no lone pairs of electrons is _____.
| |
A)
|
CH4
| |
B)
|
H2O
| |
C)
|
HI
| |
D)
|
PH3
| |
32.
|
The molecule containing a triple bond of the following is _____.
| |
A)
|
ethylene
| |
B)
|
ethane
| |
C)
|
methane
| |
D)
|
acetylene
| |
34.
|
The carbon–carbon bond is strongest in _____.
| |
A)
|
ethane
| |
B)
|
ethylene
| |
C)
|
propane
| |
D)
|
acetylene
| |
35.
|
The carbon–carbon bond distance is shortest in _____.
| |
A)
|
benzene
| |
B)
|
cyclohexane
| |
C)
|
ethylene
| |
D)
|
acetylene
| |
37.
|
The least electronegative element of the following is _____.
| |
A)
|
Cs
| |
B)
|
Ca
| |
C)
|
F
| |
D)
|
C
| |
39.
|
An example of a polar covalent molecule is _____.
| |
A)
|
CH4
| |
B)
|
HCl
| |
C)
|
Br2
| |
D)
|
N2
| |
40.
|
The molecule, which is non-polar of the following, is _____.
| |
A)
|
HCl
| |
B)
|
H2
| |
C)
|
CO
| |
D)
|
NO2
| |
41.
|
The most ionic compound of the following is _____.
| |
A)
|
LiCl
| |
B)
|
BeCl2
| |
C)
|
KCl
| |
D)
|
CCl4
| |
50.
|
Which of the following bonds is most ionic in nature?
| |
A)
|
Cl–F
| |
B)
|
K–O
| |
C)
|
LiF
| |
D)
|
LiI
| |
51.
|
The chemical bond most covalent in nature of the following is _____.
| |
A)
|
C–H
| |
B)
|
C–Cl
| |
C)
|
H–F
| |
D)
|
O–H
| |
52.
|
The electronegativity difference between carbon and fluorine is _____.
| |
A)
|
2.5
| |
B)
|
1.5
| |
C)
|
0.5
| |
D)
|
3.5
| |
53.
|
The ionic bond of the following is _____.
| |
A)
|
Cs–F
| |
B)
|
N–H
| |
C)
|
Si–Cl
| |
D)
|
N–B
| |
54.
|
The ionic compound of the following is _____.
| |
A)
|
KF
| |
B)
|
F2O
| |
C)
|
ICl
| |
D)
|
CO2
| |
55.
|
Fluorine will form a covalent compound with _____.
| |
A)
|
Mg
| |
B)
|
Ca
| |
C)
|
S
| |
D)
|
Na
| |
56.
|
The covalent compound of the following is _____.
| |
A)
|
KH
| |
B)
|
Na2O
| |
C)
|
CCl4
| |
D)
|
RbCl
| |
58.
|
Which of the following bonds is not possible?
| |
A)
|
C = C
| |
B)
|
C = H
| |
C)
|
C º C
| |
D)
|
C = O
| |
64.
|
The molecule not obeying the octet rule of the following is _____.
| |
A)
|
SbCl5
| |
B)
|
PCl3
| |
C)
|
SiH4
| |
D)
|
Cl2
| |
79.
|
NH4+ is isoelectronic with _____.
| |
A)
|
NH3
| |
B)
|
NO3–
| |
C)
|
AlCl4–
| |
D)
|
AlCl3
| |
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