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Chemistry 9 Chapter 3
Periodic Table and Periodicity of Properties - 11
1.
Ionization energy of Lithium is?
a) 1312
b) 403
c) 496
d) 520
2.
Moving from left to right in a period, ionization energy?
a) Decreases
b) Remains constant
c) Increases
3.
The ionization energy decreases down the group because?
a) Shielding effect increases
b) Shielding effect decreases
c) None of these
d) Atomic size decreases
4.
Ionization energy increases from left to right in a period because force of attraction between nucleus and the valence electron?
a) Remains constant
b) Increases
c) Decreases
5.
Which one of the following has lower ionization energy?
a) K
b) Rb
c) Li
d) Na
6.
Which one of the following has greater ionization energy?
a) Be
b) C
c) N
d) B
7.
Which one of the following explains the anion formation?
a) Atomic size
b) Electronegativity
c) Electron affinity
d) All of these
8.
The amount of energy released when an electron adds up in the valence shell of an isolated atom to form a uninegative gaseous ion is known as?
a) Ionization energy
b) Electronegativity
c) Activation energy
d) Electron affinity
9.
In a period from left to right, the electron affinity of an element?
a) Remains constant
b) Increases
c) Decreases
10.
Which one of the following has the highest electron affinity in each period?
a) Alkali metals
b) Nobel gases
c) Alkaline earth metals
d) Halogens
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