MEDIUM
9th ICSE
IMPORTANT
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What is Dobereiner’s Law of Triads?

Important Questions on Periodic Table

MEDIUM
9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 6 - Periodic Table>Questions>Q 2
Why was Dobereiner’s Law of Triads discarded?
MEDIUM
9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 6 - Periodic Table>Questions>Q 3
What is Newland’s Law of Octaves? Explain with the help of examples.
MEDIUM
9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 6 - Periodic Table>Questions>Q 3
Why was the Newland’s Law of Octaves discarded?
MEDIUM
9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 6 - Periodic Table>Questions>Q 4
Elements lithium, sodium and potassium were placed in one group on the basis of their similar properties. What are those similar properties?
 
MEDIUM
9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 6 - Periodic Table>Questions>Q 4
Elements lithium, sodium and potassium were placed in one group on the basis of their similar properties.
What is the usual name of this group?
MEDIUM
9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 6 - Periodic Table>Questions>Q 5

Elements calcium, strontium and barium were put in one group on the basis of their similar properties. State those similar properties.

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9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 6 - Periodic Table>Questions>Q 6
State Mendeleev’s Periodic Law.
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9th ICSE
IMPORTANT
S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9>Chapter 6 - Periodic Table>Questions>Q 7
What was the Mendeleev’s basis for the classification of elements?