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प्रश्न
Is it possible to have an element having atomic number 1.5 placed between hydrogen and helium?
उत्तर
It is not possible to place an element with an atomic number of 1.5 between hydrogen and helium. This is because elements are placed in the increasing order of their atomic numbers. Atomic numbers are always whole numbers and cannot be in decimals, as half an electron or half a proton cannot exist.
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संबंधित प्रश्न
Fill in the blank:
The modern periodic table consists of ……………. periods.
Write the merits of the modern periodic table over Mendeleev’s Periodic table
Name the scientist who prepared modern periodic table.
Explain why All the elements of a period have different chemical properties.
(b) What is the number of elements is 3rd period, the modern periodic table?
Give the symbol and valency of the following element and radical.
Zinc
Give the symbol and valency of the following element and radical.
Chlorine [Chloride]
Name the following:
The group of the Modern Periodic Table to which calcium [Ca2+] belongs.
Mendeleev's periodic table : atomic mass : : Modern periodic table : _______
Define periods of modern periodic table.
