Question

13. Write the names of first four members of the halogen
family. Write their symbols in the order of
increasing atomic number. How are their melting
points expected to be related to their atomic
numbers?​

Answer 1

Answer:

The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I).

The increasing order: fluorine (F), chlorine (Cl), bromine (Br), iodine (I).

Due to relatively weak intermolecular forces, chlorine and fluorine form part of the group known as "elemental gases". The elements become less reactive and have higher melting points as the atomic number increases.