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NCERT-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-EXERCISE
- In terms of block, period and group, where would you locate the elemen...
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- Write the atomic number of the element present in the third period and...
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- Which element do you think would have been named by (a) Lawrence Berke...
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- Why do elements with similar properties occur in the same group?
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- What do atomic radius and ionic radius really mean to you?
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- How do atomic radii vary (a) down the group and (b) along the period f...
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- What do you understand by isoelectronic species? Name a species that w...
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- Consider the following species: N^(3-),O^(2-),F^(ө),Na^(o+),Mg^(2+) ...
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- Explain why cations are smaller and anions larger in radii than their ...
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- What is the significance of the terms-'isolated gaseous atom' and 'gro...
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- Energy of an electron in the ground state of the hydrogen atom is -2.1...
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- Among the second period elements the actual ionisation enthalpies are ...
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- How would you explain the fact that the first ionisation enthalpy of s...
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- What are the various factors due to which the ionisation enthalpy of t...
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- The first ionisation enthalpy of group 13 elements are : Explain ...
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- Which of the following pairs of elements would have a more negative el...
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- Would you expect the second electron gain enthalpy of O as positive, m...
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- What is the basic difference between the terms electron gain enthalpy ...
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- How would you react to the statement that the electronegativity of N o...
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- Describe the theory associated with the radius of an atom as it a. g...
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