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प्रश्न
Name the following metal:
A metal present in period 3, group 1 of the periodic table.
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उत्तर
Sodium
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संबंधित प्रश्न
How were the positions of cobalt and nickel resolved in the modern periodic table?
Explain why all the elements of a period have different chemical properties.
What is the fundamental difference in the electron configurations between the group 1 and group 2 elements?
How many periods and groups are there in the modern periodic table?
Give the symbol and valency of the following element and radical.
Oxygen [Oxide]
Give the symbol and valency of the following element and radical.
Bisulphate
Find the correlation:
Mendeleev’s periodic table : atomic mass : : Modern periodic table : _______
The element which has the least tendency to lose electrons is ______
The three elements A, B and C with similar properties have atomic masses X, Y and Z respectively. The mass of Y is approximately equal to the average mass of X and Z. What is such an arrangement of elements called as? Give one example of such a set of elements.
Match the atomic number with the following:
A rare gas.
