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Home » Among the elements B, Al, C and Si,(i) which element has the highest first ionisation enthalpy?(ii) which element has the most metallic character? Justify your answer in each case.
Among the elements B, Al, C and Si,
(i) which element has the highest first ionisation enthalpy?
(ii) which element has the most metallic character? Justify your answer in each case.
CBSE | Chemistry | Class 11 | Classification of Elements and Periodicity in Properties | NCERT Exemplar
Among the elements B, Al, C and Si,
(i) which element has the highest first ionisation enthalpy?
(ii) which element has the most metallic character? Justify your answer in each case.

(i) The ionization enthalpy of carbon is the highest. It rises from left to right along the period and then decreases as we move down the group.

(ii) The most metallic element is aluminium. The metallic nature decreases across the period from left to right and it increases as we move down.

i

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