Which property is the basis of long form of periodic table?
The long form of periodic table is based upon the property that ‘Physical and chemical properties of the elements are a periodic function of their atomic number.’
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8.
How many elements are placed in each period of the p-block?
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9.
What is the number of groups in: (i) p-block (ii) d-block?
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10.
How many elements are present in: (i) second period (ii) fourth period (iii) sixth period?