Among the element: B, Al, C and Si a) which has the highest first ionization enthalpy ? b) which has largest atomic size?

Among the element: B, Al, C and Si a) which has the highest first ioni

1.	Among the element: B, Al, C and Si a) which has the highest first ionization enthalpy ? b) which has largest atomic size?
Answer» CarbonAnswer: (i) Carbon has the highest first ionisation enthalpy AMONG the elements B, Al, C and Si. The first ionisation enthalpy of C is more than B on account of higher NUCLEAR CHARGE. B and Al belong to the same GROUP and B has higher value than Al as it is smaller in size.Explanation: