Question

Look up all the halogens in Periods 2-5. Give their name and formula for the form in which they exist under conditions in the chemistry laboratory. Describe what each one looks like under normal conditions.

Answer 1

Second period: The halogen present in second period is Flourine with formula F_2(g) . It possess paleyellow colour and exists as a gas.

Third Period : The halogen present in third period is Chlorine with formula Cl_2(g) . It possess greenish yellow colour and exists as a gas.

Fourth period: The halogen present in fourth period is Bromine with formula Br_2(l). It possess reddish brown colour and exists as volatile liquid.

Fifth period: The halogen present in fifth period is Iodine with formula I_2(s) . It possess dark violet colour and exists as a volatile solid.