Class 9 MCQs Tests

Chemistry 9 Chapter 3 Practice Test 7

ByMuhammad Zaman January 10, 2022October 29, 2022

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146

Class 9 Chemistry

Chapter 3

Practice MCQs Test No 7

1 / 10

When atomic radius increases, electron affinity _____.

Decreases

Remains constant

Increases

Becomes zero

2 / 10

Which of the following has the highest electron affinity?

3 / 10

Ionization energy is a/an _____.

Cation formation

Bond breaking process

Bond making process

Anion formation

4 / 10

Element in group II A with smallest atomic radius is _____.

5 / 10

Electron affinity involves _____.

Removal of an electron from the outermost shell an atom

Addition of an electron to the outermost shell of an atom

Addition of an electron to the nucleus of an atom

Addition of a proton to the nucleus

6 / 10

Arrange the elements in decreasing ionization energy.

Li,Na,K

Li<Na<K

Li>Na>K

K>Na>Li

7 / 10

Atomic radii decreases because of

Increase in attractive forces of the nucleus and valence electrons

Increase in number of protons

Increas in number of valence electrons

All of these

8 / 10

Ionization results in the ejection of _____.

Neutrons

Nucleus

Protons

Electrons

9 / 10

Which element has the highest electronegativity?

10 / 10

Electronegativity refers to _____.

the ability of an atom to attract the electrons toward nucleus

the energy required to remove an electron from a gaseous atom in the ground state.

tendency of an atom to attract a shared electron pair towards itself

the ability of an atom to attract the electrons in a chemical bond toward itself

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