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प्रश्न
Give the chemical formula of sodium bicarbonate
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उत्तर
It denotes in a compound, the number of atoms of element present.
∴ Formula = \[\ce{NaHCO3}\]
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संबंधित प्रश्न
What is the significance of atomic number in the modern classification of elements? Explain with the help of an example.
What is the number of elements is 1st period the modern periodic table?
(b) What is the number of elements is 3rd period, the modern periodic table?
What are the periods in a periodic table? Give two characteristics of each.
What are the groups in a periodic table? Give two characteristics of each.
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)
Give the symbol and valency of the following element and radical.
Sulphate
Compare Modern Periodic Law with Mendeleev's Periodic Law.
Noble gases belong to______ group of the periodic table.
An element ‘M' has 50% of the electrons filled in the 3rd shell as in the 2nd shell. The atomic number of ‘M’ is ______.
