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ICSE-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-FILL IN THE BLANKS. TYPE QUESTIONS
- The element ekasilicon predicted by ...... was discovered by .. .. .. ...
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- .. .......... and not the ......... is the most fundamental property o...
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- Hydrogen may be placed at the top in group ......... as well as in gro...
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- Vertical columns of periodic table are known as
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- The sixth period contains-in all ............ elements among which .. ...
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- The elements of p-block possess electronic configuration of the type ....
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- What is the basis of the long form of the periodic table?
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- Most of the transition metal ions are ............... and........ in n...
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- Covalent radius is defined as .. ....... of the distance between the ...
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- Ca^(2+) has a smaller ionic radius than K^(+) because it has ............
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- The atomic radii ............ on moving down a group.
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- Anion is ..................... (larger / smaller) than the parent atom...
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- The screening effect of inner electrons on the nucleus causes
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- Noble gases possess .... .. ...... values of ionisation energies due t...
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- Give one word or a phrase for the following statement: The energy ...
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- Comment on the electron affinities of noble gases.
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- Second electron affinity of oxygen is ............ .
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- Why the melting and boiling points of halogens increase in going from ...
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