Ionic radii vary in(i) inverse proportion to the effective nuclear charge.(ii) inverse proportion to the square of effective nuclear charge.(iii) direct proportion to the screening effect.(iv) direct proportion to the square of screening effect
Question
Ionic radii vary in(i) inverse proportion to the effective nuclear charge.(ii) inverse proportion to the square of effective nuclear charge.(iii) direct proportion to the screening effect.(iv) direct proportion to the square of screening effect
Solution
(i) True: Ionic radii vary in inverse proportion to the effective nuclear charge. This is because as the effective nuclear charge increases, the electron cloud is pulled closer to the nucleus, reducing the size of the ion.
(ii) False: Ionic radii do not vary in inverse proportion to the square of effective nuclear charge. The relationship between ionic radii and effective nuclear charge is not squared.
(iii) True: Ionic radii vary in direct proportion to the screening effect. The screening effect refers to the ability of electrons in inner energy levels to shield electrons in outer energy levels from the full positive charge of the nucleus. As the screening effect increases, the outer electrons are less attracted to the nucleus, and the ionic radius increases.
(iv) False: Ionic radii do not vary in direct proportion to the square of the screening effect. The relationship between ionic radii and the screening effect is not squared.
Similar Questions
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