Electrical conductivity _ from Be to Ra:
Correct answer: B. Increases
- A. Decreases
- B. Increases
- C. Remains unchanged
- D. First decreases then increases
Explanation
Option B, 'Increases,' is correct because electrical conductivity generally increases from Beryllium (Be) to Radium (Ra) within the alkaline earth metals group.Beryllium (Be) is a poor conductor of electricity compared to the other alkaline earth metals. This is because it has a relatively high ionization energy and a small atomic size, which makes it less likely to readily release electrons for electrical conduction.As you move down the group from Beryllium to Radium, the atomic size increases and the number of electrons available for conduction also increases. This results in an increase in electrical conductivity. Radium is the most metallic and has the highest electrical conductivity among the alkaline earth metals.
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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