EASY
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Newlands' law of octaves seemed to be true only for elements up to "A". Here, A refers to

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Important Questions on The Periodic Table

MEDIUM
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
Write the name of the scientist who has given a triad law for the classification of elements. Explain the law of triad.
EASY
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
Write Newlands Law of 'Octaves' for classification of elements.
MEDIUM
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
Write the name of the scientist who has given the octave rule for the classification of elements. Explain the octave rule.
EASY
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
A teacher asked to give an example for Dobereiner’s triad, Ramu wrote them as “Li, Na, Mg”, In these three, identify which element does not belong to this triad?
HARD
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
What is Newlands’ Law of Octaves? What were the limitations of Newlands’ Law of Octaves? 
 
MEDIUM
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements

Chlorine, Bromine, and Iodine form a Dobereiner's Triad. If the approximate atomic mass of Chlorine is 35 and that of Iodine is 127:

Find the atomic mass of Bromine.

MEDIUM
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
State the limitations of Newlands' Law of Octaves?
MEDIUM
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
The modern periodic table has been evolved through the early attempts of Dobereiner, Newland and Mendeleev. List one advantage and one limitation of all the three attempts.
MEDIUM
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
Classification of elements helps us to
EASY
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
Who proposed the law of Octaves? 
EASY
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
State Newlands law of Octaves. 
MEDIUM
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
What is Newland's law of octaves? Why was this law rejected?
EASY
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
The reasons for rejecting the law of octaves is:
EASY
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
According to the Newlands' law of octaves, C should resemble in its properties with
EASY
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
The 'Law of Octaves' was given by
HARD
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements

Elements have been arranged in the following sequence on the basis of their increasing atomic masses.

F, Na, Mg, Al, Si, P, S, CI, Ar, K

(a) Pick two sets of elements that have similar properties.
(b) The given sequence represents what law of classification of elements?

EASY
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
Upto which element, the law of octaves was found to be applicable?
MEDIUM
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
A and B are the two elements having similar properties and obeying Newland's law of octaves. How many elements are there in between A and B?
EASY
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
Law of Octaves was given by:
MEDIUM
Science>Chemistry>The Periodic Table>Early Attempts at Classification of Elements
What were the limitations of Newlands’ Law of Octaves?