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प्रश्न
How many groups and periods does the modern periodic table have?
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उत्तर
The modern periodic table consists of seven horizontal rows and eighteen vertical columns.
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संबंधित प्रश्न
From the standpoint of atomic structure, what determines which element will be the first and which the last in a period the periodic table?
Name two elements in each case:
Actinides
Name the noble gas with 3 shells.
The horizontal rows in a periodic table are called _____.
Give the symbol and valency of the following element and radical.
Nitrate
Write a scientific reason.
Lithium and sodium are included in the same group in the periodic table.
Explain structure of modern periodic table in short.
______ is the longest period in the periodical table.
In the modern periodic table, elements are arranged according to their ______
Spot the error:
The elements of group 13 are called the carbon family.
