Amongst the elements $B, A l, C a n d S i$ : (a) Which has the highest first ionization enthalpy? (b) Which has most negative electron gain enthalpy? (c) Which has the largest atomic radius? (d) Which has the most metallic character?

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Solution

a) Carbon, (b) Carbon, (c) Al. (d) Al.

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Amongst the elements B,Al,CandSi: (a) Which has the highest first ionization enthalpy? (b) Which has most negative electron gain enthalpy? (c) Which has the largest atomic radius? (d) Which has the most metallic character?

a) Carbon, (b) Carbon, (c) Al. (d) Al.

Amongst the elements $B, A l, C a n d S i$ : (a) Which has the highest first ionization enthalpy? (b) Which has most negative electron gain enthalpy? (c) Which has the largest atomic radius? (d) Which has the most metallic character?