Question:
Complete the following table to determine the number of valence electrons and electron configuration for the following elements. The first one has been done for you.
▶️Answer/Explanation
Ans: 
Question:
Which group of the periodic table has the maximum values for their melting points? Identify the type of bonding present in these elements and explain why the melting points are so high.
▶️Answer/Explanation
Ans: Group 14 has the maximum values for melting points; the elements carbon (diamond and graphite) and silicon exist as giant covalent lattice structures; the very high melting points are a consequence of the large number of strong covalent bonds within the structure.