Arrange the following as stated:

(a) N2, O2, F2, Cl2 (Increasing order of bond dissociation energy)
(b) F, Cl, Br, I (Increasing order of electron gain enthalpy)
(c) F2, N2, Cl2, O2 (Increasing order of bond length) ​

1. he size of an atom can be expressed by three radii. Name them. Which of these

   given the highest, and the lowest value of the atomic radius of an element? 

1. Why does lithium form covalent bond unlike other alkali which forms ionic

   bond? ​

1. The atomic number of an element is 16. Determine its position in accordance to

   its electronic configuration. ​