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  • Which of the following has the lowest melting point?Option: 1 MgOption: 2 Be<

Which of the following has the lowest melting point?

Option: 1

Mg


Option: 2

Be


Option: 3

Ca


Option: 4

Sr


Answers (1)

best_answer

The melting point of elements shows a general trend with their atomic numbers. The elements with low atomic numbers have high melting points while the elements with higher atomic numbers have low melting points. In a period from left to right, the melting points of elements first increase and become maximum till some middle. The melting point of elements decreases down the group because in moving down the group, the size of elements increases, and thus the metallic bond between the atoms becomes weaker, and hence the melting point decreases.

Therefore, Option(4) is correct.

Posted by

himanshu.meshram

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