Question

The elements of one short period of the Periodic Table are given below in the order from left to right:

Li, Be, B, C, O, F, Ne

1. To which period do these elements belong?
2. One element ofthis period is missing. Which is the missing element and where should it be placed?
3. Which one of the elements in this period shows the property of catenation?
4. Place the three elements fluorine, beryllium and nitrogen in the order of increasing electronegativity.
5. Which one of the above elements belongs to the halogen series?

Answer 1

1. Second period
2. Nitrogen. It should be placed between oxygen and carbon.
3. Carbon (C)
4. Beryllium < Nitrogen < Fluorine
5. Fluorine (F)