Science (Theory & Practical) Class-9>Chapter 8 - Chemical Bonding>Questions>Q 1

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9th Chhattisgarh Board

IMPORTANT

Earn 100

The atomic numbers of potassium and chlorine are $19$ and $17$ respectively.
Depict the ionic bond in potassium chloride using Lewis symbols.

Important Questions on Chemical Bonding

MEDIUM

9th Chhattisgarh Board

IMPORTANT

Science (Theory & Practical) Class-9>Chapter 8 - Chemical Bonding>Questions>Q 1

The atomic numbers of potassium and chlorine are $19$ and $17$ respectively.

What will be the charges on potassium and chloride ions in potassium chloride?

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9th Chhattisgarh Board

IMPORTANT

Science (Theory & Practical) Class-9>Chapter 8 - Chemical Bonding>Questions>Q 2

The atomic numbers of lithium and fluorine are

3

and

9

respectively. Use electron dot structures to show the ionic bond formation between lithium and fluorine.

HARD

9th Chhattisgarh Board

IMPORTANT

Science (Theory & Practical) Class-9>Chapter 8 - Chemical Bonding>Questions>Q 3

What is the valency of oxygen? What is the valency of potassium? Explain.

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9th Chhattisgarh Board

IMPORTANT

Science (Theory & Practical) Class-9>Chapter 8 - Chemical Bonding>Questions>Q 4

The number of the electron in the M shell of an element is

7

and its valency is

1

. What will be the electronic configuration of the ion of this element?

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IMPORTANT

Science (Theory & Practical) Class-9>Chapter 8 - Chemical Bonding>Questions>Q 5

You know that aluminium has three electrons in its valence shell which it loses to form

{Al}^{3 +}

. Can you name the element that has four electrons in its outermost shell?

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IMPORTANT

Science (Theory & Practical) Class-9>Chapter 8 - Chemical Bonding>Exercise 3>Q 1

The molecular formula of the compound ammonia is

{NH}_{3}

, it is formed by nitrogen and hydrogen. Hydrogen needs to share one electron and nitrogen need to share three electrons to attain inert gas configuration. Can you draw the electron dot structure of ammonia?

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IMPORTANT

Science (Theory & Practical) Class-9>Chapter 8 - Chemical Bonding>Questions>Q 1

Draw the electron dot structure of ethane

(C_{2} H_{6})

.

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9th Chhattisgarh Board

IMPORTANT

Science (Theory & Practical) Class-9>Chapter 8 - Chemical Bonding>Questions>Q 2

Draw the electron dot structure of any molecule which has a double bond.