Class 9 MCQs Tests

Chemistry 9 Chapter 3 Practice Test 7

ByMuhammad Zaman January 10, 2022October 29, 2022

/10

131

Class 9 Chemistry

Chapter 3

Practice MCQs Test No 7

1 / 10

Electronegativity refers to _____.

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

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

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

the ability of an atom to attract the electrons toward nucleus

2 / 10

Which element has the highest electronegativity?

3 / 10

Which of the following has the highest electron affinity?

4 / 10

When atomic radius increases, electron affinity _____.

Becomes zero

Remains constant

Increases

Decreases

5 / 10

Electron affinity involves _____.

Addition of an electron to the nucleus of an atom

Removal of an electron from the outermost shell an atom

Addition of a proton to the nucleus

Addition of an electron to the outermost shell of an atom

6 / 10

Ionization energy is a/an _____.

Cation formation

Bond making process

Bond breaking process

Anion formation

7 / 10

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

8 / 10

Ionization results in the ejection of _____.

Protons

Nucleus

Electrons

Neutrons

9 / 10

Arrange the elements in decreasing ionization energy.

Li>Na>K

Li,Na,K

Li<Na<K

K>Na>Li

10 / 10

Atomic radii decreases because of

All of these

Increase in number of protons

Increas in number of valence electrons

Increase in attractive forces of the nucleus and valence electrons

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