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ICSE-PERIODIC PROPERTIES OF ELEMENTS -QUESTIONS FOR PRACTICE (Choose true and false statements:)
- Why atomic number is more fundamental than any other quantity ?
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- Give reason Atomic size decreases across a period but increases down...
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- Atomic radius of lithium is greater than the atomic radius of fluorine...
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- State true or false: In a group, the valency of each element is the sa...
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- State true or false: The elements of group 17 of the periodic table ar...
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- The valency of helium is 2 because it is the second element of period ...
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- Lithium is more reactive than potassium.
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- Ionisation energy increases on moving down a group in the periodic tab...
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- Electronegativity of fluorine is greater than that of chlorine.
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- Electron affinity is reverse of ionisation energy.
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