EASY
Stage 1 & 2
IMPORTANT
Earn 100

'Law of octaves' was proposed by
(a)Newland
(b)Dobereiner
(c)Mendeleev
(d)Lother Meyer

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Important Questions on Periodic Classification of Elements
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IMPORTANT
The element of group are

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According to the modern periodic law of elements the variation in properties of elements is related to their

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Dobereiner's triad of elements is illustrated by

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Which of the element has maximum ionisation energy?

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Which of the following has the largest atomic size?

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Element 'A' has 11 protons in its nucleus. To which group of the periodic table it will belong?

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The family of elements with the highest ionisation enthalpy is

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IMPORTANT
Which of the following is not a transition metal?
