Question

The correct order of melting point will be:

• A. $Be>Li$
• B. $Be<Li$
• C. $Be=Li$
• D. Can not be predicted

Answer 1

The correct option is A $Be>Li$

Beryllium $Be$ has a higher melting point as it contains two electrons for metallic bonding whereas $Li$ contains only one elelctron. Furthermore, size of $Be$ is smaller than that of $Li$ so it will require more amount of energy for melting.