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Chemistry · Classification of Elements and Periodicity in Properties
हिन्दीMatch List-I with List-II: List-I List-II A Shielding effect of inner electrons I Increases across a period B Effective nuclear charge (\( Z_{\text{eff}} \)) II Decreases down a group C Atomic radius III Reduces the actual nuclear charge experienced by valence electrons D First ionization enthalpy IV Generally increases across a period Choose the correct answer from the options given below:
Match List-I with List-II:
| List-I | List-II | ||
|---|---|---|---|
| A | Shielding effect of inner electrons | I | Increases across a period |
| B | Effective nuclear charge (\( Z_{\text{eff}} \)) | II | Decreases down a group |
| C | Atomic radius | III | Reduces the actual nuclear charge experienced by valence electrons |
| D | First ionization enthalpy | IV | Generally increases across a period |
Choose the correct answer from the options given below:
Correct answer · Option 2
A-(III), B-(I), C-(II), D-(IV)
Explanation
Inner core electrons shield valence electrons reducing nuclear charge; effective nuclear charge increases across a period while atomic radius decreases and ionization enthalpy increases.
