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प्रश्न
Match the atomic number with the following:
An element of group 2.
पर्याय
19
15
8
4
2
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उत्तर
4
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संबंधित प्रश्न
In the Modern Periodic Table, which are the metals among the first ten elements?
What is the significance of atomic number in the modern classification of elements? Explain with the help of an example.
What is the usual number of valence electrons in the atoms of the last element in a period?
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?
Name the type of elements which have one electron short of octet.
State the main aim of classifying elements. Which is the more fundamental property of elements that is used in the development of Modern Periodic Table? Name and state the law based on this fundamental property. On which side of the periodic table one can find metals, non-metals and metalloids?
Give the symbol and valency of the following element and radical.
Bisulphate
Compare Modern Periodic Law with Mendeleev's Periodic Law.
The groups 1 and 2 constitute the ______ block.
Match the atomic number with the following:
A rare gas.
