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NARAYNA-PERIODIC TABLE -All Questions
- The first four successive ionization energies for an element are 6 , 1...
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- The number of species among the following , having insert gas configu...
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- The number of elements among the following atomic numbers that are p b...
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- Among the following oxides, how many of them are amphoteric oxides? ...
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- The no. of elements which are more electropositive than 'Fe' in the f...
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- The no. of paramagnetic species in the following . Na^(+),Cl^(-), Sn^(...
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- The ionisation energy of Li is 500 KJ/mole. The amount of energy requi...
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- How many of the following statements are correct according to Mendelee...
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- Match the following Columns
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- Match the following columns
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- Match the following columns
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- Match the following columns
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- The atomic radii of transition elements from Cr to Cu are almost equal...
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- Fluorine does not form oxyacids unlike other halogens because
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- The screening effect of d-electrons is
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- Which of the following is the correct order of increasing radius of sp...
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- Two elements A and B belonging to same group have electrones affinity ...
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- Calculate the effective nuclear charge at the periphery of nitrogen at...
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- Astatine is a radioactive halogen. It is a solid at room temperature b...
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- In which of the following arrangements, the order is correct according...
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