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प्रश्न
Define:
Periodic table
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उत्तर
The periodic table is a tabular arrangement of elements in horizontal rows, called periods, and vertical columns, called groups, to classify elements and facilitate their systematic study.
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संबंधित प्रश्न
In the modern Periodic Table, why does cobalt with higher atomic mass of 58.93 appear before nickel having lower atomic mass of 58.71?
Which of the following are the correct characteristics of isotopes of an element?
(i) same atomic mass
(ii) same atomic number
(iii) same physical properties
(iv) same chemical properties
(a) (i), (ii) and (iv)
(b) (ii), (iii) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
What is meant in the periodic table by a period?
Name an element of group 18 which can form compounds.
Define the atomic size.
Give the symbol and valency of the following element and radical.
Sulphate
Explain structure of modern periodic table in short.
State whether true or false. If false, correct the statement.
Lanthanides and actinides are kept at the bottom of the periodic table because they resemble each other but they do not resemble with any other group elements.
In the modern periodic table, elements are arranged according to their ______
If an element X is placed in group 14, what will be the formula and the nature of bonding of its chloride?
