Q22 of 59 Page 30

In the following questions two or more options may be correct.

Ionic radii vary in


As effective nuclear charge increases ionic radii decreases as it causes a huge attraction the outermost shell.

Screening effect shield the outermost electron and is directly proportional to ionic radii.

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20

In the following questions two or more options may be correct.

In which of the following options order of arrangement does not agree with the variation of property indicated against it?


 21

In the following questions two or more options may be correct.

Which of the following have no unit?


 23

In the following questions two or more options may be correct.

An element belongs to 3rd period and group-13 of the periodic table. Which of the following properties will be shown by the element?


 24

Explain why the electron gain enthalpy of fluorine is less negative than that of chlorine.