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7th ICSE
IMPORTANT
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Molecules can exist in free state because they are very .

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Important Questions on Atomic Structure

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7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>EXERCISES>Q 6
Atoms of most of the elements do not exist in _____ state. (free / solid)
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7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>EXERCISES>Q 7
Phosphorus exists in the form of _____ molecule. 
 
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7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>EXERCISES>Q 1
 All the postulates of Dalton's atomic theory were correct.
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7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>EXERCISES>Q 2
A molecule cannot exist in free state.
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7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>EXERCISES>Q 3
Atomicity of noble gases is 2.
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7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>EXERCISES>Q 4
Valency is always a whole number. 
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7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>EXERCISES>Q 5
Acid radical has positive valency.
MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Chemistry>Chapter 4 - Atomic Structure>EXERCISES>Q 6
Valency of sulphate in H2SO4 is -2.