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ICSE-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-SHORT ANSWER TYPE QUESTIONS
- Explain why : Crystal radius is larger than covalent radius.
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- Give reason Atomic size decreases across a period but increases down...
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- Arrange with explanation the following ions in the increasing order of...
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- Arrange the following ions in the decreasing order of their sizes and ...
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- Define ionisation energy . What is its value for a hydrogen atom ?
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- Why is anion larger than its parent atom ?
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- Define valency. How does it change across a period and on going down a...
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- Why is the second ionisation energy of an element much greater than it...
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- Explain what do you understand by screening effect. How does this effe...
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- Arrange with explanation the following elements in the increasing orde...
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- Why do the alkali metals possess minimum and the noble gases maximum i...
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- Why is the ionisation energy of beryllium greater than that of Li and ...
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- Why does the ionisation energy decrease on going down a group?
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- Among the elements of second period pick out the element with the m...
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- Among the elements of second period pick out the element with the mo...
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- Among the elements of second period pick out the element with the l...
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- Among the elements of second period pick out the element that is th...
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- Among the elements of second period pick out the element that is the...
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- Why does the fourth period have eighteen and not eight elements?
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- The valency of a representative element is either equal to the number ...
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