Question

What is the correct order of ionisation enthalpy of group 13 elements?
(A) B > Al > Ga > In > Tl
(B) B < Al < Ga < In < Tl
(C) B > Al < Ga > In < Tl
(D) B > Al > Ga < In < Tl

Answer 1

(B) B < Al < Ga < In < Tl is the correct answer.

Ionizationenthalpy decreases due to increase in atomic size as well as shielding.

When moving down the group 13, so ionizationenthalpy decreases with B to Al.

Ga normally have higher ionizationenthalpy than Al and Al immediately after the block elements with Ga follows the afterd–block elements.

Answer 2

Holla ^_^


☸ Required Answer is ⬇⬇ ⬇⬇ ⬇


⭕ B) B < Al < Ga < In < Tl


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