Question

Which of the following statements are correct?
(a) Helium has the highest first ionisation enthalpy in the periodic table
(b) Chlorine has less negative electron gain enthalpy than fluorine
(c) Mercury and bromine are liquids at liquids at room temperature
(d) In any period, the atomic radius of alkali metal is the highest

Answer 1

Answers: (a) Helium has the highest first ionisation enthalpy in the periodic table
(c) Mercury and bromine are liquids at liquids at room temperature
(d) In any period, the atomic radius of alkali metal is the highest

Chlorine has more negative electron gain enthalpy than fluorine. Therefore, all other given statements are correct except the statement b.