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Chemistry 9 Chapter 3
Periodic Table and Periodicity of Properties - 8
1.
Which one of the following is a p-block element?
a) Si
b) U
c) K
d) Fe
2.
Which one of the following is an f-block element?
a) P
b) Lu
c) Zn
d) H
3.
The group number for Ne is 8. How many electrons would be present in its valence shell?
a) 8
b) 4
c) 16
d) 2
4.
The period number of Ne is 2. So n=?
a) 2
b) 6
c) 8
d) 4
5.
Valence shell electronic configuration of Nitrogen is 2s
2
2p
3
.What would be its period number?
a) 3
b) 6
c) 4
d) 2
6.
Valence shell electronic configuration of oxygen is 2s
2
2p
4
.What would be its group number?
a) 3
b) 6
c) 2
d) 4
7.
How many elements are present in the first period?
a) 3
b) 1
c) 2
d) 4
8.
Hydrogen and Helium have valence electrons in thier?
a) K shell
b) M shell
c) L shell
d) N shell
9.
Lithium has atomic number 3. How many electrons are present in L shell?
a) 4
b) 3
c) 1
d) 2
10.
Second period in the periodic table begins with?
a) Ne
b) H
c) He
d) Li
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