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प्रश्न
What is the need for classification of elements?
उत्तर
It is impossible for a chemist to study all the elements and their compounds. Hence, classification is a must.
Following are the reasons for the classification of elements:
- To study elements better
- To correlate the properties of the elements with some fundamental properties which are characteristic of all the elements
- To reveal relationships between elements
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संबंधित प्रश्न
State whether the following statement is true of false:
The elements in a group have consecutive atomic numbers.
The element which forms a basis oxide has the atomic number of:
(a) 18
(b) 17
(c) 14
(d) 19
Why was this basis of classification discarded for future classification of elements?
Write the name.
The atom having smallest atomic radius from group 1.
Moseley’s periodic table is based on atomic mass.
The atom of an element has electronic configuration 2, 8, 7. To which of the following elements would it be chemically similar?
The elements of group 16 are called ______
Which one of the following does not increase while moving down the group of the periodic table?
Relate the names of the following scientists with the statements given below.
Arranged elements in the increasing order of atomic mass.
Identify the following:
An element in Period 1 which can be placed in both Group 1 and Group 17 of the Periodic Table.
