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The first ionization enthalpy (Delta(i)H...

The first ionization enthalpy `(Delta_(i)H)` values of the second period elements `Li, Be` and `C` are respectively `520, 899` and `1086 kJ mol^(-1)`. Predict whther the first `Delta_(i)H` value for `B` will be more close to `690` or `990 kJ mol^(-1)`?

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The first ionisation enthalpy (Delta_(i)H^(o-)) values of the third period elements, Na, Mg and Si are respectively 496, 737 and 786 kJ mol^(-1) . Predict whether the first Delta_(i)H^(o-) value for Al will be more close to 575 or 760 kJ mol^(-1) ? Justify your answer.

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The first ionisation enthalpy (Delta_(i)H) values of the third-period elements, Na, Mg and Si are respectively 496, 737 and 786 kJ mol^(-1) . Predict whether the first Delta_(i)H value for Al will be more close to 575 or 760 kJ mol^(-1) . Justify your answer.

The first ionization enthalpy (Delta_(t)H) values of the third period elements, Na, Mg and Si are respectively 496, 737 and 786 kJ mol^(-1) . Predict whether the first Delta_(t)H valye for Al will be more close to 575 or 760 kJ mol^(-1) ? Justify your answer.

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