Chemistry
Grade-9
Easy
Question
What happens to the boiling and melting points of the alkaline earth metals as you move down the group?
- Increases
- Decreases
- Remains the same
- Varies randomly
Hint:
Down the group metallic bond strength decreases.
The correct answer is: Decreases
- Both melting point and boiling point decreases down the group.
- This reflects the decrease in the strength of each metallic bond.
- The atoms in a metal are held together by the attraction of the nuclei to electrons which are delocalized over the whole metal mass.
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