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Analyze the graph given below:1. Identify the graph. 2. Account for the following observations: (i) ‘Ne’ has the maximum value of ∆iH . (ii) In the graph from Be to B,∆iH decrease. |
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Answer» 1. Graph showing the variation of ionisation enthalpy (∆iH) with atomic number (Z) of the elements of second period. 2. (i) ‘Ne’ is an inert gas and it has closed electron shell with stable octet electronic configuration. Hence it has the maximum ionisation enthalpy in the second period. (ii) Be has completely filled electronic configuration and a more stable. So ionization enthalpy is high. |
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