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प्रश्न
State what is meant by the term chemical formula.
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उत्तर
Chemical formula is the representation of a substance by means of symbols.
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संबंधित प्रश्न
Which element has the electronic configuration 2, 8, 2?
Explain why, the first period of the periodic table has only two elements whereas second period has eight elements
In what respects do the properties of group 1 elements differ from those of group 17 elements? Explain with examples by taking one element from each group.
Name two elements in Inert gas.
Give the symbol and valency of the following element and radical.
Calcium
Give the symbol and valency of the following element and radical.
Hydroxide
State what the group number in the Modern Periodic Table signifies. Give a reason why elements in the same group, have similar valency and similar chemical properties.
State the number of elements in Period 1 of the Periodic Table.
Distinguish between:
Group 17 - Group 18
State any five features of modern periodic table.
