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What is the need for classification of elements?

Important Questions on Classification of Elements and Periodicity in Properties

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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
The atomic number of the element unnilennium is :
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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements

Identify the incorrect match.

Name IUPAC Official Name
(a) Unnilunium (i) Mendelevium
(b) Unniltrium (ii) Lawrencium
(c) Unnilhexium (iii) Seaborgium
(d) Unununium (iv) Darmstadtium
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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying 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?
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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
Mendeleev's periodic law states that the properties of elements are a periodic function of their
MEDIUM
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
Which one of the following statements for D.I. Mendeleev, is incorrect ?
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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
In which of the following options, the law of triad is applicable?
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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
The neutral oxide among the following is
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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
Which of the given atoms has the greatest electron affinity?
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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
Which one of the following element is represented as Eka-Silicon in Mendeleev's periodic table?
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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
Which of the following is a metalloid?
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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
Classify the given elements as metals, non-Metals and metalloids.
Na, O, As, Cl, W and Te 
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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
The elements are broadly classified as
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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
The number of elements known at present are
HARD
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
What was the need for classification of elements?
HARD
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
What is the need for classification of elements?
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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
What do you mean by classification of elements?
MEDIUM
Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
How many elements are known till the end of 2020.
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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
What is meant by classification of elements?
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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
What is the need for the classification of elements?
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Chemistry>Inorganic Chemistry>Classification of Elements and Periodicity in Properties>Need for Classifying Elements
Why is it necessary to classify the elements?