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Chemistry 9 Chapter 4 - Structure of Molecules -1
1.
Each period except period I in the periodic table starts with?
a) Noble gas
b) Alkali metal
c) Halogen
d) Alkaline earth metal
2.
Which of the following are called as inert gases?
a) Halogens
b) Alkali metals
c) Noble gases
d) Alkaline earth metals
3.
The electronic configuration in the outer most shell of the noble gases is?
a) ns
2
np
6
b) ns
2
np
3
c) ns
1
np
2
d) ns
2
np
5
4.
How many electrons are present in the valence shell of noble gases other than Helium?
a) 2
b) 6
c) 8
d) 18
5.
Which one of the following is correct about Noble gases?
a) Not active
b) Inert
c) Stable
d) All of these
6.
An octet is a set of?
a) 8
b) 6
c) 9
d) 7
7.
In forming compounds, the atoms tend to gain electronic
configuration of a(n)?
a) Noble gas
b) Alkaline earth metal
c) Alkali metal
d) Halogen
8.
Which one of the following does not have eight electrons in its valence shell?
a) He
b) Kr
c) Ne
d) Ar
9.
When did G.N Lewis used an octat rule?
a) 1816
b) 2000
c) 1916
d) 1910
10.
The tendency of atoms to acquire eight electron configuration in their valence shell,when bonding is known as?
a) Octat rule
b) Triplet rule
c) Duplet rule
d) Periodic law
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