Class 9 MCQs Tests

Chemistry 9 Chapter 3 Practice Test 7

ByMuhammad Zaman January 10, 2022October 29, 2022

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218

Class 9 Chemistry

Chapter 3

Practice MCQs Test No 7

1 / 10

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

2 / 10

When atomic radius increases, electron affinity _____.

Increases

Decreases

Becomes zero

Remains constant

3 / 10

Ionization energy is a/an _____.

Bond making process

Bond breaking process

Anion formation

Cation formation

4 / 10

Electronegativity refers to _____.

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

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

the ability of an atom to attract the electrons toward nucleus

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

5 / 10

Which element has the highest electronegativity?

6 / 10

Arrange the elements in decreasing ionization energy.

Li>Na>K

Li<Na<K

K>Na>Li

Li,Na,K

7 / 10

Which of the following has the highest electron affinity?

8 / 10

Ionization results in the ejection of _____.

Nucleus

Electrons

Protons

Neutrons

9 / 10

Electron affinity involves _____.

Addition of a proton to the nucleus

Addition of an electron to the nucleus of an atom

Removal of an electron from the outermost shell an atom

Addition of an electron to the outermost shell of an atom

10 / 10

Atomic radii decreases because of

Increase in attractive forces of the nucleus and valence electrons

Increas in number of valence electrons

All of these

Increase in number of protons

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