EASY
9th ICSE
IMPORTANT
Earn 100

Explain 'Newland's law of Octaves". Why was the law discarded ?

Important Questions on The Periodic Table

EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 5 - The Periodic Table>EXERCISE 5(A)>Q 5
Did Dobereiner's triads also exist in the columns of Newland's Octaves? Compare and find out.
EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 5 - The Periodic Table>EXERCISE 5(A)>Q 6

Lithium, sodium and potassium elements were put in one group on the basis of their similar properties. What are those similar properties ?

EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 5 - The Periodic Table>EXERCISE 5(A)>Q 6
The elements calcium, strontium and barium were put in one group or family on the basis of their similar properties. What were those similar properties?
EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 5 - The Periodic Table>EXERCISE 5(A)>Q 7

What was Mendeleev's basis for classification of elements?

EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 5 - The Periodic Table>EXERCISE 5(A)>Q 7
Mendeleev's contributions to the concept of periodic table laid the foundation for the Modem Periodic Table, Give reasons.
EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 5 - The Periodic Table>EXERCISE 5(A)>Q 8
State Mendeleev's periodic law.
EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 5 - The Periodic Table>EXERCISE 5(A)>Q 9

Use Mendeleev's periodic table to predict the formula of hydrides of carbon and silicon.

EASY
9th ICSE
IMPORTANT
Concise Chemistry Class 9>Chapter 5 - The Periodic Table>EXERCISE 5(A)>Q 9
Use Mendeleev's Periodic Table to predict the formula of oxides of potassium, aluminium and barium.