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प्रश्न
What are the elements.
एक पंक्ति में उत्तर
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उत्तर
“Elements are pure substances made up of one kind of atoms and cannot be broken down into simpler substances.” 118 elements are there.
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संबंधित प्रश्न
Is it possible to have an element having atomic number 1.5 placed between hydrogen and helium?
Define:
Periodic table
Name two elements in halogens.
Name the metals in the first twenty elements.
Give the symbol and valency of the following element and radical.
Bisulphate
Give the chemical formula of sodium sulphite
Group 1 and 2 : s block : : group 13 and 18 : _______
p-block is composed of groups 1 and 2.
______ forms the basis of the modern periodic table.
Name the non-metals in the first twenty elements.
